Question

CE
1. Hind the lateral surface area and total sunt
2. Find the lateral surface area and twa urme mes octor
4. Mary wants to decorate her Christmas tree. She wants to place the
wooden block cowered with coloured paper with picture o Santa
must know the exact quantity of paper to buy for this purpose the
length, breadth and height as Hem, em and 21 cm respectively
5. The length, breadth and height of a room are m, 4 m and 3 m pertinet
the cost of white washing the walls of the room and the ceiling at the
area of the new cuboid to that of the sum of the surface areas of the threat
LEVEL 1
freadth 40 cm and height 20 cm
3. Find the ratio of the total surface area and lateral since mens
square sheets of paper of side 40 cm would she require?
7.50 m
7. A 4 cm cube is cut into 1 cm cubes, Calculate the total surface area of all these
cubes.
8. The length of a hall is 18 m and the width 12 m. The sum of the areas of the face
and the flat roof is equal to the sum of the areas of the four walls. Find the bene a
the hall
9. Hameed has built a cubical water tank wit
1 for his house, with each othered
1.5 m long. He gets the outer surface of the tank excluding the base, covered with some
tiles of side 25 cm. Find how much he would spend for the tiles, if the cost of less
360
per
dozen
INCEKT
10. Each edge of a cube is increased by 50%. Find the percentage increase in the surface
area of the cube.
11. A closed iron tank 12 m long, 9 m wide and 4 m deep is to be made. Determine the
cost of iron sheet used at the rate of 5 per metre sheet, sheet being 2 m wide
12. Ravish wanted to make a temporary shelter for his car by making a bor-ik
structure with tarpaulin that covers all the four sides and the top of the car
the front face as a flap which can be rolled up). Assuming that the stitching
margins are very small, and therefore negligible, how much tarpaulin would be
required to make the shelter of height 2.5 m with base dimensions 4m x 3m!
INCERT
13. An open box is made of wood 3 cm thick. Its external length, breadth and height
1.48 m, 1.16 m and 8.3 dm. Find the cost of painting the inner surface of 53 per
sq. metre
.
14. The dimensions of a room are 12.5 m by 9 m by 7 m. There are 2 doors and
windows in the room; each door measures 2.5 m by 1.2 m and each window 15*​

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