A cuboid, 10cm long, 10cm wide, 15cm high, find the surface area of this figure?

A cuboid, 10cm long, 10cm wide, 15cm high, find the surface area of this figure?

The surface area of the cuboid = (length × width + length × height + width × height) × 2, so the surface area of this figure = (10 × 10 + 10 × 15 + 10 × 15) × 2 = 800 square centimeters