Question

A rectangular foto frame has an area of 200 square centimeters.Its lengh is 20 centimeters. a.Find the with of the foto frame b.Find the perimeter of the foto frame

Answer 1

• Width = 10cm
• Perimeter = 60 cm

Explanation:

a. Width

We are given the area and the length so we can use this to find the width using the formula for rate:

Length * Width = Area

20 * w = 200

20w = 200

w = 200/20

w = 10 cm

b. Now that you have both the length and the width, the perimeter is:

= (2 * length) + (2 * width)

= (2 * 20) + (2 * 10)

= 40 + 20

= 60 cm