A solid cuboid has a length of 7 cm, a width of 5 cm, and a height of 4 cm. Calculate its total surface area.
- 280 cm\(^2\)
-
166 cm\(^2\)
- 140 cm\(^2\)
- 83 cm\(^2\)
The correct answer is: B
Explanation
Total = 2(LB + BH + LH)
Surface area
= 2(7 x 5 + 5 x 4 + 7 x 4)
= 2(35 + 20 + 28)
= 2(83)
= 166cm\(^2\)