Question

the area of a rectangular sheet of aluminium is 400 cm^2.if the breadth of the sheet is 16cm,find its length.Also find the perimeter of the aluminium sheet.​

Answer 1

Area of rectangle = 400 cm²

Breadth= 16 cm

Area of the rectangle = l*b

400=16*l

25 cm = length of the rectangle

Perimeter of the rectangle

=2(l+b)

=2(16+25)

=2(41)

=82 cm

Hope it helps

Answer 2

Area = $400m^{2}$

Breadth = 16 cm

Length = 400/16                                                                                    ( l=A/b )

Length = 25 cm

Perimeter = 2(l+b) = 2(16+25) = 2 x 41 = 82cm