Question

3
The width of a computer monitor is 29 cm. If the perimeter is 140 cm, what is the area of the computer monitor?

Answer 1

Answer:

A = 1189 cm².

Explanation:

Since a computer monitor is shaped like a rectangle, we know that the formula for the perimeter is $P= 2l + 2w$.

If we know the width, we can solve for the length:

140 = 2w + 2(29)

140 = 2w + 58

82 = 2w

w = 41.

To find the area, we use the formula $A= l * w$.

A = 41 ×29

A = 1189 cm².