The perimeter of a rectangular box is 42cm. The length is 13 cm. Find its area.
The perimeter of a rectangular box is 42cm. The length is 13 cm. Find its area. Correct Answer 104cm2
2(a + b) = 42 ⇒ 2(13 + b) = 42 ⸫ b = 8 area = ab = 13 × 8 = 104 cm2The perimeter of a rectangular box is 42cm. The length is 13 cm. Find its area. Correct Answer 104cm2
2(a + b) = 42 ⇒ 2(13 + b) = 42 ⸫ b = 8 area = ab = 13 × 8 = 104 cm2