Question

2. Find the breadth and perimeter of the rectangles.
(a) Area = 90 sq cm, length = 15 cm
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Answer 1

Step-by-step explanation:

area = l* b

90 = 15 * b

b = 90/15

b= 6cm

perimeter = 2*(l+b)

=2*(6+15)

=2*(21)

=42cm

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Answer 2

Answer:

breadth= 6cm & perimeter= 42cm

Step-by-step explanation:

solution

l= 15cm

A= 90cm

b= ?

P= ?

we know,

A= l×b

90cm=15cm × b

90cm÷15cm= b

6cm = b

b=6cm

now,

P= 2(l+b)

P= 2(15cm+6cm)

P= 2×21cm

P= 42cm