Question

WLI15
per m²
I. Il is 10 m deep. Find
@ its inner curved surface area,
(ii) the cost of plastering this curved surface at the rate of Rs 40
.
In a hot water heating system, there is a cylindrical pipe of length 28 m and diameter
5 cm. Find the total radiating surface in the system.
Find
the lateral or curved surface area of a closed cylindrical petrol storage tank that is
4.2 m in diameter and 4.5 m high.
1
ü) how much steel was actually used, if of the steel actually used was wasted in
12
making the tank.
In Fig. 13.12, you see the frame of a lampshade. It is to be
covered with a decorative cloth. The frame has a base
diameter of 20 cm and height of 30 cm. A margin of 2.5 cm
is to be given for folding it over the top and bottom of the
Frame. Find how much cloth is required for covering the
ampshade.
Fig. 13.12​

Answer 1

Answer:

good morning

Step-by-step explanation:

have a wonderful Wednesday