Question

If a boy runs once around a football field of length
and width equal to 40 m and 30 m respectively, how
many metres has he run?​

Answer 1

Answer:

140 m

Step-by-step explanation:

Length of football field = 40 m

Width of football field = 30 m

Perimeter = 2(40+30) m = 2(70) m = 140 m

Hence, the boy runs 140 m.

Answer 2

Question:-

If a boy runs once around a football field of length and width equal to 40 m and 30 m respectively, how many metres has he run?

Answer:-

• Distance covered by boy is 140 m

To find:-

• Distance covered by boy

Solution:-

Perimeter of field = Distance covered by the boy

$\boxed{ \underline{ \red{ \huge{ perimeter = 2(l + b)}}}}$

Here ,

• length (l) = 40 m
• Breadth (b) = 30 m

$\large{ : \implies \: perimeter = 2(40 + 30)}$

$\large{ : \implies \: perimeter =2 \times 70}$

$\large{ : \implies \: perimeter =140 \: m}$

• Thus,The perimeter of field is 140 m