Question

the perimeter of the rectangular sheet is 120 cm if the length is 30 cm find bredth also find the area

Answer 1

Answer:

area of given question is 900cm sq.

Answer 2

Perimeter of the rectangular sheet = 120cm

Length = 30cm

We know, Perimeter = 2(Length + Breadth)

$\sf{= 2( 30cm + b) =120cm}$

$\sf{\implies 60cm + 2b = 120cm}$

$\sf{\implies \: 2b = 120cm - 60cm }$

$\sf{\implies \: 2b = 60cm}$

$\sf{\therefore \: b = \frac{60cm}{2} = 30cm }$

Breadth= 30cm

Area = l × b

$\sf{ = 30cm \times 30cm}$

$\sf{\therefore 900{cm}^{2}}$