Question

4. Find the surface area of a wooden box which is in the shape of a cube, if the edge of the box is 27 cm
5. Find the cost of painting the all round outer surface of a box with lid 60 cm long, 40 cm wide and 30 cm
6. The dimensions of an oil tin are 26 cm x 26 cm x 45 cm. Find the area of the tin sheet required for making
(e)l= 1.2 m
(f) l = 2.25 m
2. Find the surface area of the following cubes :
1
(a) 1 = 8 cm (b) 7 = 12 cm
(d)/= 5 dm
(c)! =)
3. The total surface area of a cube is 54 cm. What is the length of its sides?
high at 50 p per 20 cm?
x x .
20 such tins. If I sq m of the tin sheet costs 10, find the cost of tin used for these 20 tins.
7. Find the area of the thin sheeting required for making an open cistern (i, e., without a lid), 5 m long
. 3
wide, 4 m deep
8. A swimming pool
is 20 m in length, 15 m in breadth, and 4 m in depth. Find the cost of cementing is
floor and walls at the rate of 12 per square metre.
9. Two cubes, each of side 15 cm are joined end to end. Find the surface area of the resulting cuboid
Multiple Choice Questions (MCQs)
12. Find the cost of painting the four walls of a room
10 metres long, 5 metres broad and 6 metres high
10. The perimeter of one face of a cube is 20 cm.
at the cost of 4 per square metre.
Its total surface area is :
(a) 720
(a) 2400 cm
(b) 880
(c) 360
(d) 1200
11. A cube of edge 5 cm is cut into cubes, each of High Order Thinking Skills (HOTS)
edge 1 cm. The ratio of the total surface area of
13. The area of the four walls in a room is 120 m
one of small cubes to that of the large cube is :
The length of twice the breadth. If the height
the room is 4 m, find the area of the floor
(b) 150 cm
(d) 96 cm2
(c) 120 cm
5​

Answer 1

Answer:

1. 4734 CM*

Step-by-step explanation:

2.10368000000 cm$

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