Question

The perimeter of rectangle is 130cm.If breadth is 30 cm.Find it's length?Also find area of the rectangle.​

Answer 1

Answer:

perimeter = 2(l+b)

130 =2( l+30)

130= 2l+ 60

70 = 2l

70/2 = l

35cm =length

area = l×b

= 35×30

=1050 cm^2

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

perimeter of rectangle = 2(l+b)-----(1)

Area of rectangle = l×b-----------------(2)

given that

p = 130 cm

b = 30 cm

now,we have to find l

FROM (1)

130 = 2(l+30)

130 = 2l+60

2l =70

l = 35

Now,subtitude values of l and b in (2)

Area = 35×30

= 1050

Therefore area of the given triangle is 1050cm²

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