12. A pit 3 m x 2.4 m x 90 cm is dug. The earth dug out was evenly spread 12 cm high
on a 4 m wide platform. Find the length of the platform.
13. An edge of a cube is 10 cm. Find its volume. If each of its edges is halved, find the volume
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13 volume of the cube is side multiple 3times so the volume is 1000 when the edge is halved it's edge become 5 and the volume of the halved edge is 125
hope this will help you
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