Due to covid-19, the principal of Reikaeletse secondary school, Mr Morweng decides to buy two water tanks in order to comply with the covid-19 regulations. The tanks are shown below: a cylindrical and rectangular tank with their dimensions. The cylindrical tank will be placed on the circular concrete bed, the diameter of the concrete bed will be 100 mm more than the diameter of the cylindrical tank. CYLINDRICAL TANK RECTANGULAR TANK Diameter Height 1420 mm Length 1450 mm Width 1210 mm 1100 mm Height 1200 mm NB: 1m³ 1000/ Use π=3,142 2.1 2.2 2.3 2.4 2.5 Determine the radius (in meter) of the cylindrical tank. Calculate the circumference of the concrete bed in meter. You may use the formula: Circumference = 2 x π x radius The SGB decides to paint the rectangular tank to avoid rusting. Determine the surface area (SA) in m² that need to be painted. You may use the formula: SA=2(length x width) + 2(length x height) + 2(width x height) If 5 litres of paint cover an area of 13 m² and the rectangular tank needs 3 coats of painting, calculate the number of litres of paint needed to paint the tank as well as the number of 5 litre tins needed. Which tank can hold more water? Show your calculations in terms of litres.
