The solid figure is made up of 7 identical cubes of edge 4 m.
- Find the volume of the solid figure.
- Find the total surface area of the solid figure.
(a)
Volume of each cube
= 4 x 4 x 4
= 64 m
3
Volume of the solid figure
= 7 x 64
= 448 m
3 (b)
Total surface area is the total area of the exterior surface of a solid.
Total number of faces
= 5 + 4 + 4 + 3 + 4 + 3 + 5
= 28
Area of each side of the cube
= 4 x 4
= 16 m
2 Total surface area of the solid figure
= Area of 28 faces
= 28 x 16
= 448 m
2 Answer(s): (a) 448 m
3; (b) 448 m
2