Question

The perimeter of a rectangle is 35cm. The length is 5cm. Write and

solve an equation to find the width of the rectangle.

Answer 1

P = 2L + 2W

35 cm = 2(5 cm) + 2(W cm)

W = 12.5 cm

Explanation:

P = 2L + 2W

35 cm = 2(5 cm) + 2(W cm)

35 cm - 10 cm = 2W cm

2W cm = 25 cm

w cm = 12.5 cm

Answer 2

Explanation:

step 1. a rectangle has 2 sets of congruent sides; we will call them l and w.

step 2. P (perimeter) = l + l + w + w = 35

step 3. 35 = 5 + 5 + 2w

step 4. 25 = 2w

step 5. w(width) = 12.5 cm.