Question

ро
3 m
Section
3.2 m/
tank?
С
7.5 m
3. The cross-section of a tunnel perpendicular to
its length is a trapezium ABCD as shown in
AM = BN; AB = 7 m; CD = 5 m. The height
the following figure, also given that:
of the tunnel is 24 m. The tunnel is 40 m
D
С
B
8. A rect
32 cm
side 1
sheet
Ans.
long. Calculate :
rectar
conta
9. A SW
Its d
13 m
с
А
B
M
1-2
pool
slop
10. The
N
(i) the cost of painting the internal surface of
the tunnel (excluding the floor) at the rate
of 5 per m² (sq. metre).
(ii) the cost of paving the floor at the rate of
18 per m2
stan





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Answer 1

Answer:The cross-section of a perpendicular to its length is a trapezium ABCD as shown in the figure also given that : AM = BN; AB = 7 m; CD = 5 m. The height of the tunnel is 2.4 m. The tunnel is 40 m long

Step-by-step explanation: