Question

Find the Length of a rectangle
Length: ?
Breadth: 30cm
Perimeter: 80cm​

Answer 1

Step-by-step explanation:

we know,

perimeter of rectangle= 2(L+B)

therefore, 80 =2(L+30)

80/2=L+30

40-30=L

So, length of a rectangle = 10cm

Answer 2

solution

Let the unknown value be X

perimeter of rectangle =2(l+b)

80 =2(x+30)

80 =2x+60

80-60 =2x

20 =2X

X=20/2

X=10cm

length is 10cm

VERIFICATION

p=2(l+b)

80=2(10+30)

80=20+60

80=80

LHS=RHS

area of rectangle

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