Question

is open from the top, find the cost of the iron sheet at the rate of 75 per m.
the original metal cube.
10. How many cubes of side 3 cm can be cut from a solid cuboid whose length, breadth and height
21 cm, 9 cm and 15 cm respectively?
11. The dimensions of a pool are in the ratio 4:3 : 1. If its volume is 6144 m, find the total surface a
of the pool.
12. Water is pouring into a cuboidal reservoir at the rate of 30 litres per minute. If the dimensions of
reservoir are 9 mx 4 mx 6 m, find the number of hours it will take to fill the reservoir.
13. A cube of side 5 cm is painted on all its faces. If it is sliced into 1 cubic centimetre cubes, how ma
1 cubic centimetre cubes will have exactly one of their faces painted? Of
14. A swimming pool is 200 m by 50 m and has an average depth of 2 m. By the end of a summer da
the water level drops by 2 cm. How many cubic metres of water is lost on the day?
15. A covered wooden box has the inner measures as 115 cm, 75 cm and 35 cm and thickness of the
wood as 2.5 cm. Find the volume of the wood.
16. A cuboid has a total surface area of 94 m² and its lateral surface area is 70 m2. Find the area of
base. Also, find its volume if its height is 5 m.
SURFACE AREA AND VOLUME
If we take
and stack the
8. An iron tank 20 m long, 10 m wide and 8 m deep is to be made from iron sheet 4 m wide. If the
9. A metal cube is melted to form three smaller cubes of edges 3 cm, 4 cm and 5 cm. Find the te​

Answer 1

Answer:

so big question not know

Answer 2

Answer:

I can answer only 10 th Question it's answer is 15 . because I have shortage of time.