Question

There is a rectangular park in a town.The length of the park is 20cm more than its breadth. Perimeter of the park is 100cm and people of the town also want to fence the park. find the lenth of park 35 45 60​

Answer 1

Answer:

35

Step-by-step explanation:

length be x+20                                                              (1)

then breadth = x                                                          (2)      

perimeter = 100 cm                                                                    

we know perimeter of rectangle = 2(l+b)                                       (3)

Putting 1 and 2 in 3

2(x+x+20)=100

2(2x +20)=100

2x +20=100/2

2x+20=50

2x= 30

x=15

ATQ

x+20= length

15+20=35

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Answer 2

Answer:

35 CM is the length of the park

Perimeter of rectangle = 2× (l + b)

100 = 2× ( x + 20 + x)

100 = 2× ( 2x + 20)

100 ÷ 2 = 2x + 20

50 = 2x + 20

50 - 20 = 2x

30 = 2x

30 = 2x

x = 30 ÷ 2 = 15 CM.

breadth = 15 CM

so length is equal to x + 20 = 15 + 20 = 35 cm