Question

THE PERIMETER OF A RECTANGLE IS 90m WHOSE BREATH IS 10m LESS THAN ITS LENGTH ITS BREATH

Answer 1

Answer:

4x=110

Step-by-step explanation:

Let length be x.

breadth is x-10

Perimeter of rectangle=2(l+b)

2(x+x-10)=90

2(2x-10)=90

4x+20=90

4x=90+20

4x=110

length=110/4=27.5

breadth=27.5-10=17.5.

Answer 2

Step-by-step explanation:

Answer

Letthebreadth=xcm

length=x+15

Perimeter=90m

2(l+b)=90m

l+b=45

x+15+x=90

x=20cm

then,length=20+15=30

l=30cm

Dimension(l,b)=(30cm,20cm)

area=l×b

=30×20

=600cm

myself ujjwal Kumar Sharma Class-7 mark as brainelist