A rectangular grass field is 75 m $\times$ 55 m, it has a path of 2.5 m wide all round it on the outside. Find the area of the path and the cost of constructing it at Rs.2 per sq m?
Area =$\left (l + b +2d\right)$ 2d
= (75 + 55 +2.5 $\times$ 2) 2$\times$2.5 => 675
675 $\times$ 2 = Rs.1350
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A rectangular lawn of dimensions 80 m $\times$ 60 m has two roads each 10 m wide running in the middle of the lawn, one parallel to the length and the other parallel to the breadth. What is the cost of traveling the two roads at Rs.3 per sq m? |
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The length of a rectangle is increased by 25% and its breadth is decreased by 20%. What is the effect on its area? |
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The diagonals of a rhombus are 15 cm and 20 cm. Find its area? |
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Find the area of the quadrilateral of one of its diagonals is 20 cm and its off sets 9 cm and 6 cm? |
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