12. Two cross roads, each of width 5 m, run at right angles through the centre of a
rectangular park of length 70 m and breadth 45 m and parallel to its sides. Find
the area of the roads. Also find the cost of constructing the roads at the rate of
* 105 per m2
d 75 m wide. Find the cost of covering the
Answers
Step-by-step explanation:
MATHS
Two cross roads, each of width 5 m, run at the right angles through the centre of a rectangular park of length 70 m and breadth 45 m and parallel to its sides. Find the area of the roads. Also find the cost of constructing the roads at the rate of Rs.105 per m
2
.
Share
Study later
ANSWER
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
Mark answer as brain list
follow me