Question

If each edge of a cube is doubled,
(i) how many times will its surface area increase?
(ii) how many times will its volume increase?
A match box measures 4 cm x 2.5 cm x 1.5 cm. What will be the volume of a packet
containing 12 such boxes?
Volume of a cube is 1,000 cm. Find its total surface area.
How many planks each of which is 2 m long, 2.5 cm broad and 4 cm thick can be
cut off from a wooden block 6 m long, 15 cm broad and 40 cm thick?
Three solid metal cubes with edges 6 cm, 8 cm and 10 cm respectively are melted
together and formed into a single cube. Find the volume of new cube.
Find the volume of a cube whose surface area is 150 m².
Find the volume of a cube, one face of which has an area of 81 m2.​

Answer 1

$\huge\underline\bold\red{AnSweR}$

• The water tank can hold 6000 litres of water. 10. How many planks each of which is 3 m long, 15 cm broad and 5 cm thick can be prepared from a wooden block 6 m ...