Question

Find the height of a cylinder with radius 5 cm and surface area 1250 cm2.

Answer 1

can u help me out plss?

Answer 2

the formula for surface area of cylinder is 2\[2\pi r^{2} + 2\pi rh\] you already have the radius, so just substitute it into the formula

Answer 3

ignore the 2 in the 1st sentence

Answer 4

but how do i do it ? im confused!

Answer 5

let 2πr2+2πrh = 1250 then,

h = (1250- 2π(5)^2)/ 2π(5)^2) where 5 is your radius

Answer 6

oops h = (1250- 2π(5)^2)/ 2π(5))

Answer 7

so is going to be 5 right ?

Answer 8

si is going to be 13.42 right ?

Answer 9

h = (1250 - (2 * 3.142 * 25 )) / (2 * 3.142 * 5)
= 1250 - 157.14 / 31.42
= 1092.86 / 31.42
= 34.782