Question

the length and breadth of a rectangular Courtyard is 75 M 32 M find the cost of levelling it at the rate of 3 per metre square also find the distance covered by a boy to take 4 rounds of the courtyard​

Answer 1

we have ,

length = 75 m

breadth = 32 m

:. area = 75 x 32

ie 2400 m squared.

the cost of levelling it = 3 x area

$2400 \times 3 = 7200$

there fore the cost to level the courtyard= ₹7200

now ,

the distance covered by the boy =

$4 \times perimetre$

perimetre = 2(l+b)

ie,

$2 \times (75 + 32)$

= 107 m

therefore, the distance covered =

$4 \times 107 \\ ie \: 428m$

Answer 2

Answer

Answer:

we have ,

length = 75 m

breadth = 32 m

:. area = 75 x 32

ie 2400 m squared.

the cost of levelling it = 3 x area

=3 x 2400 = 7200

there fore the cost to level the courtyard= ₹7200

now ,

the distance covered by the boy =

perimeter = 2 (l+b)

=2 (75 + 32)

=2 (107)

=214m

Distance of the boy

=4 x perimeter

=4 x 214

=856m

Therefore the distance covered by the boy is 856m.