Question

3. Find the length of a rectangular pack if its
breath is 15cm and area is 375 square cm and perimetre is 80 CM​

Answer 1

Given :

Area of rectangle = 375 sq.cm

Breadth = 15 cm

$area \: of \: rectangle \: = \: \: l \: \times \: b$

375 = l × b

l = 375 / 15

l= 25 cm

lenght of rectangle = 25 cm.

Answer 2

length is 25 Metre

Breadth = 15 cm

Area= 375 sq.cm

Length = Area/Breadth

so length = 375/15=25 cm

Other method to solve it:

perimetre of park =80 cm

breadth= 15

let the length be X centimetres

80cm= 2*(15+X)

80/2= 15+X

40= 15+X

40-15= X

25= X

so length is = 25

Hope it helps