Question

The length of a rectangle is 3 times its width the perimeter is 92 cm find the area

Answer 1

The length of a rectangle is 3 times its width.

The perimeter is 92 cm.

Length --> x

Width --> 3x

Area of the rectangle --> y

so

3x·x = y

2(3x)+2x = 92 --> 6x + 2x = 92 -> 8x = 92 --> x =11.5 cm

so

y = 3(11.5)·11.5

y = 396.75 cm²

THE AREA IS 396.75 cm²

Answer 2

Explanation:

Let Width of rectangle =X

So length of rectangle =3x

Perimeter of rectangle=92

Perimeter of rectangle =2(length +width)

2(length+width)=92

2(3x+X)=92

8x=92

X=92/8

Width X=11.5cm

So length 3x=11.5×3

=34.5cm

Area of rectangle =34.5×11.5

=396.75cm^2