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1 Calculate the surface area of the front (the shaded area) of the storehouse.
2. Mr Mabula decides to paint the front of the storehouse. One litre of paint covers approximately 12 m^2. How many litres of paint must he buy?
3. If the paint is only sold in 2L containers that cost R232,00 each, how much will it cost Mr Mabula to paint the front of the storehouse?
4. Mr Mabula also decides to pave the rectangular driveway in front of the storehouse. A rectangular brick has a length of 222 mm and a width of 90 mm. Calculate the minimum number of bricks that Mr Mabula must buy to pave his driveway

in Mathematics by Diamond (43,702 points) | 66 views

1 Answer

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1. Area of rectangle = lxb = 4 x 3 = 12 m2

Area of triangle = (1/2) x b x h = 0.5 x 4 x 1.5 = 3 m2

Total area = 12 + 3 = 15 m2

2. 12 m2 : 1 l

15 m2 : ? l

(15/12) = 1.25 l

3.    He will need to buy 2 litres of paint and so it will cost him R232,00

4.    1 m = 1000 mm

5.33 m = 1000 x 5.33 = 5330 mm

4 m = 1000 x 4 = 4000 mm

Area of driveway = l x b = 5330 x 4000 = 21320000 mm2

Area of brick = 222 x 90 = 19980 mm2

Number of bricks = 21320000/19980 = 1067,067067 = 1068 bricks to pave the driveway
by Diamond (40,182 points)

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