Solve Solve
a cylinder of radius r cm and height h cm has a curved surface area A cm, where
a) obtain a formula for h
b) find the value of h when A = 93 ,R = 2.5 and = 3.1

A cylinder of radius r cm and height h cm has a curved surface area A cm². Where –

a) We are asked to find formula for h.

First, overturn the equation

Divide both sides by 2πr

b) Again, we are given –

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c. y = 1/4 x + 5

step-by-step explanation:

first, put the equation of the line on the graph into slope-intercept form

(y = mx + b):   y = -4x + 8

second, a perpendicular line has to have "an opposite/reciprocal slope" to the original slope. so, find the "m" value in your original equation (it's -4, right? )

original slope: m = -4   perpendicular slope: change the sign to its opposite and find the reciprocal ("flip" the number)

new slope is now positive (b/c the original slope was negative 4), and it's 1/4 (not the original slope of 4 or 4/1)