Secondary School Mathematics for Class 9 m, and its breadth
12. A box made of sheet metal costs < 6480 at 120 per square metre
box is 5 m long and 3 m wide, find its height.
18. The volume of a cuboid is 1536 m. Its length is 16 m, and its bu
and height are in the ratio 3: 2. Find the breadth and height
cuboid,
14. How many persons can be accommodated in a dining hall
dimensions (20 m / 16 m / 4,5 m), assuming that each person require
5 cubic metres of air?
18. A classroom is 10 m long, 6.4 m wide and 5 m high. If each student
be given 16 m' of the floor area, how many students can be
accommodated in the room? How many cubic metres of air would each
student get?
16. The surface area of a cuboid is 758 cm'. Its length and breadth are 14 cm
and 11 cm respectively. Find its height.
17In a shower, 5 cm of rain falls. Find the volume of water that falls on
2 hectares of ground.
18 find the volume, the lateral surface area, the total surface area and the
diagonal of a cube, each of whose edges measures 9 m. (Take 3 = 1.73.
19. The total surface area of a cube is 1176 cm. Find its volume.
20. The lateral surface area of a cube is 900 cm'. Find its volume.
21. The volume of a cube is 512 cm. Find its surface area.
22. Three cubes of metal with edges 3 cm, 4 cm and 5 cm respectively are
melted to form a single cube. Find the lateral surface area of the new
cube formed.
23/Find the length of the longest pole that can be nut
dimensions (10 mx 10
12. A box made of sheet metal costs < 6480 at 120 per square metre
box is 5 m long and 3 m wide, find its height.
18. The volume of a cuboid is 1536 m. Its length is 16 m, and its bu
and height are in the ratio 3: 2. Find the breadth and height
cuboid,
14. How many persons can be accommodated in a dining hall
dimensions (20 m / 16 m / 4,5 m), assuming that each person require
5 cubic metres of air?
18. A classroom is 10 m long, 6.4 m wide and 5 m high. If each student
be given 16 m' of the floor area, how many students can be
accommodated in the room? How many cubic metres of air would each
student get?
16. The surface area of a cuboid is 758 cm'. Its length and breadth are 14 cm
and 11 cm respectively. Find its height.
17In a shower, 5 cm of rain falls. Find the volume of water that falls on
2 hectares of ground.
18 find the volume, the lateral surface area, the total surface area and the
diagonal of a cube, each of whose edges measures 9 m. (Take 3 = 1.73.
19. The total surface area of a cube is 1176 cm. Find its volume.
20. The lateral surface area of a cube is 900 cm'. Find its volume.
21. The volume of a cube is 512 cm. Find its surface area.
22. Three cubes of metal with edges 3 cm, 4 cm and 5 cm respectively are
melted to form a single cube. Find the lateral surface area of the new
cube formed.
23/Find the length of the longest pole that can be nut
dimensions (10 mx 10
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