Question

the length of a rectangle is three times its width. If the perimeter of the rectangle is 64 cm, what is the area?

Answer 1

before area, we need to calculate length & width

let, width = x

length = 3x

so, 64 = 2(3x+x)

8x = 64

x = 8 (width)

3x = 24 (length)

So, area would be: 24 * 8 = 192 cm²