Question

Two cross roads 2.5 m wide have been constructed in the middle of a garden crossing each other at right angles, running parallel to the sides of the garden 35 m long and 20 m wide. Find the cost of constructing the roads at the rate of ₹100per sq.m.

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Answer 1

Step-by-step explanation:

width =5 m

length of first parallel road 70 m

area of first road 70×5=350 sq.m

length of second road 45 m

area of second road =45×5=225 sq.m

area of the common part of cross road with 5 m width that lies at the

center of the park 5×5 = 225 sq.m

area of roads = area of first road +area of second cross road−common area

=(350+225)−25

=575−25

=550sqm

cost of the construction per sq.m =Rs.105

total cost =550×105=Rs 57750

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