Question

The width of the rectangle is 3cm less than the length .The perimeter of the rectangle is 26cm .....if the length of the rectangle is acm long .write the expression for the width of the rectangle

Answer 1

Answer:

let the length be x

so width x-3

perimeter of rectangle =2(l+b)

26=2(2x-3)

26=4x-6

32=4x

x=8

width = x-3

8-3=5

Answer 2

Step-by-step explanation:

given,

• length = a cm
• width = 3 cm less than the length = a - 3
• perimeter = 26 cm

FORMULA:

PERIMETER = 2 ( L + B)

26 = 2 ( a + (a - 3) )

26 = 2 ( 2a - 3 )

$\frac{26}{2} = 2a - 3 \\ 13 = 2a - 3 \\ 2a = 13 + 3 \\ 2a = 16 \\ a = \frac{16}{2} \\ a = 8$

• length of rectangle = 8 cm
• width of the rectangle = 8 - 3 = 5 cm