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S.chand publication solution of class 6 chapter 25 exercise 25 B

EXERCISE 25 B


1.Work out the volume of each cuboid.

(i) fig

(ii) fig

(iii) fig

2. Complete the following table. (Measurements are in cm)

(i)(ii)(iii)(iv)(v)(vi)
Length427?16?
Breadth3639?28
Height584121824
Volume???1296403226208

 

3. Find the volume of a cube with the given side.

(i) 3 cm (ii) $\dfrac{1}{2}~cm$ (ii) 1.2 m (iv) 2.5 m

4.Find the side of the cubes whose volumes are

(i) 216 m2 (ii) 512 cm3 (iii) 1728 cm3 (iv) 2197 m3

5.The bottom of a tank measures 25m × 20 m. Find its depth, if it contains 2000 m3 water.

6. Find the volume of a cube, one face of which has an area of 64 cm2

7.The volume of a soap cake is 160 cm3. Its length and width are 10 cm and 5 cm. Find its height.

8. lf 60 cm3 of a metal weighs 1 kg, find the weight of a block of the same metal of the size 20 cm by 12 cm by 5 cm.

9. A Solid cube of edge 20 cm is melted and cast into a cuboid whose base measure 25 cm by 20 cm. Find the height of the cuboid .

10. Find the number of bricks 90 cm by 5 cm by 4 cm , contained in a crate measuring 27 cm by 15 cm by 8 cm .

11. The inside measurements of a cardboard box are $1\dfrac{1}{2}~m$ by $\dfrac{3}{4}~m$ by 60 cm . How many book of size , 20 cm by 10 cm by 7.5 cm each can be arranged in the box ? 

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