What is the length of the rectangle?

12x³

Step-by-step explanation:

The area (A) of a rectangle is calculated as

A = length × width

Here width = 12x and A = 144 , thus

length × 12x = 144 ( divide both sides by 12x )

length = = × = 12x³

256π units²   (answer b)

step-by-step explanation:

the formula for the surface area of a sphere of radius r

is             a = 4πr²

and so, if r = 8 units, then the surface area is:

a = 4π(8 units)² = 256π units²   (answer b)

there will be 35 boys in each team. : )