Find the total surface area of a cuboid whose length is 20 cm, width is 15 cm, and height is 8 cm.
Answer & explanation
Correct answer: option 1
We know that,
Total surface area of the cuboid = 2(length × width + length × height + width × height)
We have,
Length of cuboid = 20 cm
width = 15 cm
height = 8 cm
Total surface area of the cuboid = 2(20 × 15 + 20 × 8 + 15 × 8)
= 2 × 580 = 1160 cm2