Question

1. The length of a rectangular garden is thrice the width. Find its area if the perimeter is 168 m
In problem #1, If the garden should be planted along its sides with Indian trees that are 3 m apart, how many Indian trees must be planted?

Answer 1

Answer:

ANS-

Area= 1323

No of trees= 56

Step-by-step explanation:

Let the length be x

Then the breath will be 3x

Perimeter of rectangle= 2(l+b)

= 2(x+3x)= 168

2(4x)=168

8x= 168

x=168/8

x=21

Length=21

Breath=3×21=63

Area of rectangle= l×b

= 21×63=1323

No. of trees= 168/3

=56

Answer 2

Answer:

Step-by-step explanation:

Let length = l = 3b (where b is the breadth)

Perimeter = p

p = 2(l + b)

168 = 2(l + 3l)

168 = 2(4l)

168 = 8l

l = 168/8

l = 21

area = 21 x 63

a = 1323 $m^{2}$

#1

the total no. of Indian plants planted = 168 / 3 = 56

Hope it is helpful

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