Question

The length of a rectangular deck is 4 times its width. If the deck's perimeter is 30 feet, what is

the deck's area? )
Solve on paper. Then check your answer on Zearn. )
The deck's area is
square feet.

Answer 1

length of a rectangular deck is 4 times its width.

length = 4*width

perimeter = 30 feet = 2 ( length + width )

30 feet = 2( 4w + w)

15 feet = 5 w

w = 3 feet = width

length = 4* 3 = 12 feet

deck's area = 3 feet * 12 feet = 36 square feet