Question

14. The surface area of a cube is equal to the sum of the surface areas of three other cubes whose edges are 3
cm, 4 cm and 12 cm respectively. Find the edge of the first cube.
15. Two cubes of side 16 cm are joined end to end. Find the surface area of the resulting cuboid.
16. If the length of cube is doubled, by how many times does its volume and surface area increase ?​

Answer 1

Answer:

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