Question

3m
sectional
3.2 m/s
tank?
m
3. The cross-section of a tunnel perpendicular to
its length is a trapezium ABCD as shown in
the following 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
D
C
long. Calculate :
ns.
8. A rectang
32 cm ar
side 3 or
sheet an
rectangul
container
9. A swim
Its deep
1-2 m
pool, as
slopesu
10. The fol
stand w
A
B
M
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​

Answer 1

3m

sectional

3.2 m/s

tank?

m

3. The cross-section of a tunnel perpendicular to

its length is a trapezium ABCD as shown in

the following 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

D

C

long. Calculate :

ns.

8. A rectang

32 cm ar

side 3 or

sheet an

rectangul

container

9. A swim

Its deep

1-2 m

pool, as

slopesu

10. The fol

stand w

A

B

M

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

Step-by-step explanation:

a