Question

1. Through a rectangular field of length 90 m and breadth 60 m, two roads are constructed which are parallel to the sides and cut each other at right angles through the centre of the fields. If the width of each road is 3 m, find
a) the area covered by the roads.
b)the cost of constructing the roads at the rate of 110 per m².

2. Pragya wrapped a cord around a circular pipe of radius 4 cm (adjoining figure) and cut off the length required of the cord. Then she wrapped it around a square box of side 4 cm (also shown). Did she have any cord left? (pi= 3.14)

4.The adjoining figure represents a rectangular lawn with a circular flower bed in the middle. Find: a)the area of the whole land
b)the area of the flower bed 2m
c) the area of the lawn excluding the area of the flower bed
d) the circumference of the flower bed.

5. In the following figures, find the area of the ::diagram in given photo 1


6.Find the area of the quadrilateral ABCD. Here, AC = 22 cm, BM = 3 cm, DN = 3 cm, BM ::diagrams in given photo 2



please answer the following questions ​

Answer 1

Answer:

Given length of field = 90 m

width of field = 60 m.

Area of field =90×60

Area =5400m²

length of road GEFH = 90 m.

length of road ABCD = 60 m.

width of each road = 3m [Given].

Area of roads =ar(ABCD)+ar.(GEFH)−ar(LIJK)

=90×3+60×3−3×3

=270+180−9

Area of roads =441m²

.

∴ Area covered by roads =441m²  

.

cost of construction of roads =441×10

Total cost  =4410Rs.  

Step-by-step explanation:

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