A cube of side 5 cm, has been assembled using 125 cubes each of 1 cm edge. One cube is removed from the middle of each of the faces of the cube. What is the surface area (in cm2) of the remaining solid?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 174
Side of the cube = 5 cm
The surface area of a cube = 6a2 = 6(5)2 = 6(24) = 150 cm2
The total surface area of the remaining solid = 150 + 6(4)(1)2 = 150 + 24 = 174 cm2