Question

Breadth of the mirror = 15 cm
Area of mirror = Length x Breadth
= 36.5 cm x 15 cm
= 547.5 cm
Cost of one sq. cm mirror = 1
Cost of 547.5 sq. cm mirror = 1 x 547.5
= 547.50
Total cost of mirror needed is 547.50.
Worksheet 1
1. A field is in the shape of a rectangle whose length is 130 m and breadth is 95 m
respectively. Find the cost of fencing the field at 20 per metre.
2. Akshay goes three times around a rectangular field whose length and breadth are
25 m and 19 m respectively. How much distance does he cover?

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Answer 1

Step-by-step explanation:

1. Length is 130 m, Breadth is 95m

Perimeter = 2*(l+b)

= 2*(130+95)

= 2* 225 = 450 m

Cost per m = 20

Total cost = 450*20 = 9000

2. Length is 25m, Breadth is 19 m

Perimeter = 2*(l+b)

= 2*(25+19)

= 2*44 = 88 m

Distance covered by Akshay = 3*88 = 264 m