The perimeter of a rectangle is 30 cm. The width of the rectangle is 7 cm

What is the area of the rectangle?

A56 cm

B49 cm

C14 cm

Let's say the length of the rectangle is L.

We have P= (L+W)2
⇒ 30 cm= (L+ 7 cm)2
⇒ L+ 7 cm= 15 cm
⇒ L= 8 cm.

S= LW= 8 cm 7 cm= 56 cm^2.

The answer is A) 56 cm^2.

Hope this helps~

Answer Link

zahraaryoko zahraaryoko · Answer 2 · 2016-01-02T22:30:46-05:00

zahraaryoko zahraaryoko

02-01-2016

perimeter = 2(l+w)
30 = 2(l+7)
30 = 2l + 14
30 - 14 = 2l
16 = 2l
8 = l

l = 8
w = 7

area = l x w = 8 x 7 = 56 cm²

Answer Link

The perimeter of a rectangle is 30 cm. The width of the rectangle is 7 cmWhat is the area of the rectangle? A56 cmB49 cm C14 cm

Verified Answer :

Related Questions

The perimeter of a rectangle is 30 cm. The width of the rectangle is 7 cm

What is the area of the rectangle?

A56 cm

B49 cm

C14 cm