Question

Find the cost of whitewashing a wall, at the rate of * 30 per m2,
✓ if there is a door frame of dimensions 3 m x 4 m in a wall of
dimensions 10 m * 5 m.

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Answer 1

Step-by-step explanation:

Area of the whole wall = 10 * 5 =

${50m}^{2}$

Area of the door = 3 * 4 =

${12m}^{2}$

The total area that is needed for whitewashed is =

${50m}^{2} - {12m}^{2} = {38m}^{2}$

The total cost of whitewashing =

$30 \times 38 = rs.1140$

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