The surface area of a cuboid is 236 square centimeters, and its dimensions are 6 cm, 7 cm, and h cm. Find the value of h.
Show answer & explanation
Correct answer: A
Explanation
Surface area = 236 cm², dimensions = 6 cm, 7 cm, h
According to the formula,
Surface area = 2(lb + bh + hl)
236 = 2(6×7 + 7h + 6h)
236 = 2(42 + 13h)
118 = 42 + 13h
13h = 76
h = 76/13 = 5.85 cm