Question

length of a rectangular field is 55 m rohit runs around the field at the rate of 5 kilometre / hours if area of the field is 2310 square metre how long will he take to go for times around it ..​

Answer 1

GIVEN:

• Length of the rectangular field (l) = 55m
• speed of Rohit = 5 km/hr
• Area of the rectangular field (l × b) = 2310m²

TO FIND:

Time taken by Rohit for one round.

SOLUTION:

$l × b = 2310 \\ </p><p>55 × b = 2310 \\ b = \frac{2310}{55} \\ b = 42$

Breadth of the rectangular field = 42m

$primeter \: of \: a \: rectangle = 2(l + b)$

$2(l + b) \\ 2(55 + 42) \\ 2(97) \\ = 194$

The perimeter of the rectangular field is 194m.

$time = \frac{distance}{speed}$

$t = \frac{194}{5} \\ t= 38.8$

Therefore it takes 38.8 hours.