Question

Section - C(4 x 5 = 20 )
13. A wire is in the f
f
orm of a Rectangle of length 14cm and breadth 8cm. it is reshaped in
the form of a circle. What is its radius?
14. A car covers a distance of 16.25 km on one litre of petrol. How much distance will it
cover on 15.75 litre of petrol?​

Answer 1

Answer:

13]Given A wire is in shape of rectangle  

where

length=20 cm.  

breadth=12 cm.

Perimeter of rectangle =2(l+b)

=2(32)

[Perimeter =64 cm.]

now of wire is bent in shape of square

where side =a cm

now  

Perimeter of rectangle = perimeter of square  

64=4a

[a=16cm]

side of square formed is 16 cm.

14]A car covers a distance of 16.25 km in 1 litre of petrol.

therefore distance Covered in 3.5 litres = 16.25 × 3.5 = 56.875 Km

Answer 2

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