The solid figure is made up of 5 identical cubes of edge 5 cm.
- Find the volume of the solid figure.
- Find the total surface area of the solid figure.
(a)
Volume of 1 cube
= 5 x 5 x 5
= 125 cm
3
Volume of the solid figure
= 5 x 125
= 625 cm
3 (b)
Total surface area is the total area of the exterior surface of a solid.
Total number of faces
= 5 + 5 + 5 + 4 + 3
= 22
Surface area of each side of the cube
= 5 x 5
= 25 cm
2 Total surface area of the solid figure
= 22 x 25
= 550 cm
2 Answer(s): (a) 625 cm
3; (b) 550 cm
2