You are resurfacing your backyard pool. the pool is in the shape of a rectangular prism with a length of 20 ft, a width of 10 ft, and a depth of 4 ft. how many square feet of the resurfacing paint will you need?

Step-by-step explanation:

we know that

The area of the backyard pool to be resurfaced is equal to the area of the base plus the area of its four lateral sides.

so

where

B is the area of the base

P is the perimeter of the base

H is the depth of the pool

Find the area of the base B

substitute the given values

Find the perimeter of the base P

substitute the given values

we have

Find the area of the backyard pool to be resurfaced

substitute the values

b) k’(6, 4); l’(3, 3)

step-by-step explanation:

a 270° clockwise rotation maps every point (x, y) to (y, -x). (it negates the x-coordinate and then switches it and the y-coordinate.)

this means the endpoints of the side congruent to kl, k' and l', would be mapped as:

k'(-4, 6)→(6, 4)

l'(-3, 3)→(3, 3)