(Take π = 22/7) Solution A reservoir is a frustum in shape and its upper radius (r 1) = 100 m Lower radius (r 2) = 50 m and capacity of water in it = 44 x 10 7 litres PQ A metallic right circular cone cm high and whose vertical angle is 90° is cut into two parts at the middle point of its axis by a plane parallel to the base If the1 Answers Available Asked by Bright on 12th July, 21 To get notifications when anyone posts a new answer to this question, Follow New Answers Post an Answer Please don't post or ask to join a "Group" or "Whatsapp Group" as aIf you are on the north pole of this star and send a text message to your friend on the south pole, in how many seconds will you get the reply assuming she replies right away?
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π value 22/7- Solution θ = 41°, r = 10 ft Question 7 If in two circles, arcs of the same length subtend angles 60° and 75° at the centre, find the ratio of their radii Solution Let the two radii be r 1 and r 2 The central angles arc 60° and 75° The arc lengths be s 1 Find the radius of a circle if the circumference is 44cm (take π=22/7)
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Nếu biết rằng π là xấp xỉ 3,, thì có thể dễ dàng suy ra π < 22 / 7 vì số này khoảng 3, Nhưng phải mất ít nhiều công sức để chứng minh rằng π < 22 / 7 theo phương pháp được sử dụng trong chứng minh này hơn để chứng minh rằng π là xấp xỉ Ex 31, 4 Find the degree measure of the angle subtended at the centre of a circle of radius 100 cm by an arc of length 22 cm ("use " π" = " 22/7) Given 𝑙 = 22 cm r = 100 cm 𝜃 = ?Learn from an expert tutor Book a free class!
Volume of tank 1/ 22 7 Volume = π r 2 h 0,9 Note π = 22 7 0,9 2,8 7,13 m 3 OR Volume of tank 1/ 22 7 Volume = π r 2 h (0,9) 2 2,8 7,13 m 3 Volume of water in the tank 1/ 7,13 = volume of tank x 1 000 1 000 7 130 ℓ (8) 30 OR A big hemispherical dome with a cuboidal structure mounted on it (Take π = 22/7) 1 Calculate the volume of the hemispherical dome if the height of the dome is 21 m –(π = 22/7) Solution 52 Question 53 Water is flowing at the rate of 252 km/h through a cylindrical pipe into a cylindrical tank, the radius of the base is 40 cm If the increase in the level of water in the tank, in half an hour is 315 m, find the internal diameter of the pipe
It was done by inscribing and circumscribing regular polygons about a circle to obtain upper and lower bounds and he obtained 223/71 < π < 22/7, or an average value of about(π = 22/7) Solution 34 Question 35 AB and CD are two diameters of a circle perpendicular to each other and OD is the diameter of the smaller circle If OA = 7 cm, find the area of the shaded region Solution 35 Question 36 PSR, RTQ and PAQ are three semicircles of diameters 10 cm, 3 cm and 7 cm respectively Find the perimeter of theSubstitute π = 22/7 and r = 14 ≈ (22/7) x 14 2 = (22/7) x 14 x 14 = 22 x 2 x 14 = 616 So, area of the given circle is about 616 square ft Example 5 Find the length of the rope by which a goat must be tethered in order that it may be able to graze an area of 9856 square meters Solution
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Book a free class now Diameter of capsule = 35 mm Radius of capsule, say r = diameter/ 2 = (35/2) mm = 175 mm Our top 5% students will be awarded a special scholarship to Lido Book a free class now Lido By inscribing and circumscribing regular polygons about a circle to obtain upper and lower bounds, he obtained 223/71 < π < 22/7, or an average value of about Archimedes also proved that the ratio of the area of a circle to the square of its radius is the same constant Students can Download Chapter 11 Perimeter and Area Ex 113, Question and Answers, Notes Pdf, KSEEB Solutions for Class 7 Maths, Karnataka State Board Solutions help you to revise complete Syllabus and score more marks in your examinations Karnataka State Syllabus Class 7 Maths Chapter 11 Perimeter and Area Ex 113
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A hemispherical bowl is made of steel, 025 cm thick The inner radius of the bowl is 5cm Find the outer curved surface of the bowl (Assume π = 22/7)Spelled out as "pi") is a mathematical constantIt is defined in Euclidean geometry as the ratio of a circle's circumference to its diameter, and it also has various equivalent definitionsIt appears in many formulas in all areas of mathematics and physicsIt is approximately equal to The earliest known use of the Greek letter π to represent the ratio of a(Assume π = 22/7) Looking to do well in your science exam ?
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Find the volume of a cone, if its total surface area is 7128 sqcm and radius of base is 28 cm (π = 22/7) asked Aug 4 in Surface Area and Volume by Navin01 ( 506k points) surface area and volumeThe unit of area is the square unit, for example, m 2, cm 2, in 2, etc Area of Circle = πr 2 or πd 2 /4 in square units, where (Pi) π = 22/7 or 314 Pi (π) is the ratio of circumference to diameter of any circle It is a special mathematical constant The area of a circle formula is useful for measuring the region occupied by a circular 8) 4 In the below image, I've marked two red lines with a vertex Z, where Z is the midpoint of BC, and DZ is a new line of unknown length The required height (height of I from the ground) is IZ CG (or BF) = IZ 2 IZ is a part of the triangle DIZ, we know DI (5 cm) and if we get DZ also then we can find IZ
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ln fig, APB and AQP are semicircles, and, AO = OB If the perimeter of the figure is 47 cm, find the area of the shaded region (Use π = 22/7)(Assume π = 22/7) Solution (i) Rs is the cost of painting 1 m 2 area Rs 1 is the cost to paint 1/ m 2 area So, Rs is the cost of painting = (1/×) m 2 = 110 m 2 area The inner surface area of the vessel is 110m 2 (ii) Radius of the base of the vessel, let us say r Height (h) = 10 m and Surface area formula = 2πrh Using (Take π = 22/7) Solution Radius of the circle (r) = Length of the rope = 28 m Area of the place where the horse can graze Question 6 A steel wire when bent in the form of a square encloses an area of 121 cm 2 If the same wire is bent in the form of
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