The standard formula for the volume of a cone is v=πr2h3. if the cone is scaled proportionally by a factor of k, its volume becomes v' = v × k3. use your algebra skills to derive the steps that lead from v=πr2h3to v' = v × k3 for a scaled cone.

The volume of a cone with base radius r and height h is

What happens when we scale by k ?

Let V' be the volume of a cone with radius rk and height hk

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk

t

step-by-step explanation:

ever thing time 1 is a multiply by 1 it get