Question

Sides of rectangle in 3:7 ,area=1029m^2find dimensions of rectangle and its perimeter

Answer 1

Step-by-step explanation:

ratio of sides =3:7

let length be 3x and breadth be 7x

area of rectangle =1029m^2

we know, area of rectangle =length × breadth

1029 =3x × 7x

1029 =21x^2

1029/21 =x^2

49 =x^2

x=7

therefore length =3x =3×7=21m

breadth=7x=7×7=49m

perimeter of rectangle =2(l+b)

=2(21+49)

=2(70)

=140 m