A right prism has a square base of side 5 cm and a height of 12 cm. What is its total surface area?
Show answer & explanation
Correct answer: D
Explanation
base side = 5 cm
Height = 12 cm
According to the formula:
Total surface area = 2 × base area + lateral surface area
Base area = 5² = 25
2 × 25 = 50
Lateral surface area = 4 × 5 × 12 = 240
Total surface area = 50 + 240 = 290 cm²