Avril wants to puts trim around the border of one of the walls in her room. The dimensions of the wall is 10 x 15 ft. Will she need to find the area or the perimeter of the wall to figure out how much trim she needs? How much trim does she need?

Question

Mathematics

Coal

4 September, 04:51

Avril wants to puts trim around the border of one of the walls in her room. The dimensions of the wall is 10 x 15 ft. Will she need to find the area or the perimeter of the wall to figure out how much trim she needs? How much trim does she need?

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Julianne Hansen · Answer 1

She needs to find the perimeter of the wall.

The perimeter is 50 ft

Step-by-step explanation:

The wall measures 10 ft x 15 ft, that is,

Two opposite boundaries have dimensions measured to be 10 ft each, and the two other opposite boundaries are measured to be 15 ft each

The wall is rectangular (deciding from these measurements).

Perimeter of a rectangle is 2a + 2b, where

a is the dimensions of two opposite walls, and,

b the dimensions of the other opposite walls. We put

a = 10 ft

b = 15 ft

Perimeter = (2x10) + (2x15)

= 20 + 30 = 50 ft