Question

4 times the area of a lateral surface area of a cylinder is equal to 6 times the sum of area of its base. if its height is 12cm. find the lateral surface area

Answer 1

4 times the lateral surface = 6 times the sum of the base are a

4(L.S.A.) = 6 × [('pi' r^2) + ('pi' r^2)]

4(L.S.A.) = 6 (2('pi' r^2))

4 (2 'pi' r h) = 6 (2('pi' r^2))

4 × 2 × 3.14 × r × 12 = 12 × 3.14 × r × r

r = 8 cm

L.S.A = 2 × 3.14 × 8 × 12

= 602.88 cm^2

-WonderGirl

Answer 2

mark it as the brainlist answer...