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radius and slant height of the cone are in the ratio of 4:7 curved surface area is 792 CM square find its radius also find the total surface area |
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Answer» Step-by-step explanation: Area of CONE = 792 cm2 ratio = 4:7 = 4x : 7X Π = 22/7 Area of cone = Π RL 792cm2 = 22/7 × 4x × 7x 792cm2 = 22/7 × 28 x2 792cm2 = 616x2/7 792cm2 = 88x2 x2 = 792cm2 /88 x2 = 9cm2 x = √ 9 cm2 x = 3cm RADIUS = 4x = 4× 3 = 12cm
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