Question

Area of rectangle garden is 1000m if it's breadth is 40m
1) find its length
2)find its perimeter
3) length of the wire requiredfor 3 rounds of fencing
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Answer 1

area=1000m

b=40m

L=?

1) area of rectangle =L×B

1000=L×40

L=1000/40

L=25m

2) p=2(l+b)

p=2(25+40)

p=130m

3) length of wire required for 3 rounds of fencing =p×3

130×3=390m

Answer 2

Before, finding the answer. Let's find out we can find the answer.

• In this question, we are asked to find three things. First the length, the perimeter, and the length of wire required for fencing 3 times.
• So, to find the Length, we must use the formula of :

$\boxed{ \tt Length = \dfrac{Area}{Breadth } }$

• Then, to find the perimeter, we must use the formula of :

$\boxed{\tt Perimeter \: = (2 \times l) + (2 \times b)}$

• To find the length of wire required for fencing, we must multiply the number of rounds of fencing with the perimeter.

____________________

Given :

• Area = 1000 m
• Breadth = 40 m

To find :

• length
• perimeter
• length of wire required for 3 rounds of fencing

Solution :

Area of Rectangle = l × b

                     1000 = l × 40

                 $\tt Length = \dfrac{Area}{Breadth }$

                              ${ \tt = \dfrac{1000}{40} }$

                              $\tt = 25$

Therefore, the Length of the Rectangle is 25 cm.

Perimeter = (2 × l) + (2 × b)

                = (2 × 25) + (2 × 40)

                = (50) + (80)

                = 130 cm

Therefore, the Perimeter of the rectangle is 130 cm.

Length for fencing = Perimeter × no of rounds

                               = 130 × 3

                               = 390

Therefore, 390 cm of wire in required for fencing 3 times.