QUESTION 1 11. Mr Mathipa has a farm and decided to build a water tank using concrete and stone . The sketch of the tank shown below has an outside diameter of 4,6 m and a height 2m. The water from the tank runs into a trough. Concrete wall 2 m 4.6 m 1.1.1. What is the geometrical name given to the shape of the water tank? 1.1.2. Determine the outer radius of the water tank? (1) (3) 1.1.3. If the concrete wall is 0.15m thick, determine the inner radius of the water (2) tank. 1.1.4. Calculate the volume of the water tank using the inside radius. Formula: Volume of the tank = x²h, л=3.14 (3) (5) 1.1.5. Calculate the volume of the concrete used to build the tank. 1.1.6. If the tank is filled right to the top, calculate the amount of the water (in litres) that is in the tank. 1m³ 1000 litres (3) (4) 1.1.7. The farm uses 1900 litres of water per day. Mr Mathipa and his family want to go on holiday for a full two weeks (14 days). He filled the tank to the top. Use calculations to determine whether the full tank will last for two weeks. Show all your steps clearly.​