Question

1.2.1
Determine the diameter of the concrete water tank
(2)
1.2.2 Calculate the perimeter of the tank using the formula
Perimeter of the cylinder = n diameter and r = 3,142
(3)
12.3 The outside surface area of the concrete water tank needs to be painted.
Calculate the total area (nearest metre) that needs to be painted in m?.
The following formula may be used:
Painted area = Perimeter x height of the water tank + 2xrx(radius)?
(4)
1.2.4
A representative from the school state that this concrete water tank can hold
less than 150 kl of water.
Show by calculation if his statement is valid
You may use the following formula:
Volume of concrete water tank = 2 x * (radius) x height
1.2.5 During the raining season, it is predicted that rainfall in the Johannesburg
area can be enough to fill the water tank to 83 % of its capacity.
Determine the amount of water that would be in the tank in litres.
(3)
1.2.6 Determine the remaining space of the tank that would not be filled with
water as a fraction of the tank's full capacity
12​

Answer 1

Answer:

calculate the perimeter of the tank using the formula