rectangle problem 3:
The area of a rectangle is 240 square centimeters and the width is 42 centimeters.
calculate a) length? b) perimeter?
a) answer length
A = length * width
240 = length * 15 / : 15
length = 16 cm
A: The length of the rectangle is 16 cm.
b) answer perimeter
P = (l + w) * 2
P = (16 + 15) * 2
P = 62 cm
A: The perimeter of the rectangle is 62 cm.