The radius and height of a cylinder are in the ratio 5:7 and its volume is 550cm3. Pooja says that its radius is 7cm and total surface area is 377.14cm2. Do you agree with Pooja? Show your working with valid justification. [Use =22/7]
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The radius and height of a cylinder are in the ratio 5:7 and its volume is 550 cm3.
radius (r) = 5x and height (h) = 7x
. ∴ The required radius = 5x = 5 x 1 = 5cm
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