Question

The area of rectangular field is 2100 sq.m. if field is 60 m long. Find its perimeter.
180 m
b) 190 m
c) 290 m
d) 240 m​

Answer 1

>option B is correct

>perimeter of rectangle is 190m

Question:

• The area of rectangular field is 2100 sq.m. if field is 60 m long. Find its perimeter.

Given:

• area of rectangular field is 2100 sq.m
• field is 60 m long

Formula:

• Area of rectangle : LxB
• Perimeter of rectangle : 2(L+B)

To find :

• Perimeter of rectangle

Approach:

• we will first calculate breadth
• then area of rectangle

solution:

it is given that,

area of rectangular field is 2100 sq.m

so,

we know that

area of rectangle = LxB

=> 2100 = 60 x B

=> B= 2100/60= 70/2 = 35m

HENCE,breadth of rectangle is 35m

Now,

we know that ,

perimeter of rectangle is 2(L+B)

so,

=>2 (60+ 35)

=>2 (95)

=>190m

Hence, perimeter of rectangle is 190m

Thus, option B is correct

Answer 2

perimeter of rectangle is 2(L+B)

so,

=>2 (60+ 35)

=>2 (95)

=>190m

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