Question

2 points
Q.9- The perimeter of a
rectangular field 80m long is
240m. What is the area of the
field in ares?
32 ares
O 33 ares
O 34 ares
34.2 ares​

Answer 1

Answer:

32 ares

Step by step explaination :

Given :

Length of rectangular field = 80m

Perimeter of rectangular field = 240m

To Find :

Area of field in ares

Solution :

For finding area of rectangular field first we need to calculate it's breadth.

Perimeter of rectangular field = (2L + 2B)m

=> 240 = 2×80 + 2×B

=> 120 = 80 + B

=> B = 120 - 80

=> B = 40m

Thus, Breadth of rectangular field = 40m

Now

Area of rectangular field = L×B

= 80×40

= 3200m²

Now converting 3200m² into ares

Area of rectangular field = 3200/100 = 32ares

Thus 32 ares is the required area of the rectangular field.

Formula's Used :

Perimeter of rectangle = (2×length + 2×Breadth)

Area of rectangle = Length×Breadth