Answer:
Surface area = 222 square cm
Explanation:
Given the following data
Length = 3 cm
Height = 9 cm
Width = 7 cm
Surface area = 2(wl + hl + hw)
Surface area = 2(7 * 3 + 9 * 3 + 9 * 7)
Surface area = 2( 21 + 27 + 63)
Surface area = 2( 111)
Surface area = 222 square cm
Therefore, the surface area is 222 square cm
