A storage container in the shape of a cuboid has a square base with sides of 7 cm and height of 10 cm. What is the difference between its total surface area and its lateral surface area?
Show answer & explanation
Correct answer: B
Explanation
base side = 7 cm
Height = 10 cm
According to the formula:
Total surface area = 2(lw + lh + wh)
Lateral surface area = 2h(l + w)
l = w = 7
TSA = 2(7×7 + 7×10 + 7×10)= 378
LSA = 2×10(7 + 7)= 280
Difference = 378 − 280 = 98 cm²