Question

a rectangle has a length of 10cm and a perameter of 30 cm find the width of the rectangle

Answer 1

Answer:

width=5cm

Step-by-step explanation:

Perimeter of rectangle=2(l+b)

l=10cm; b=?

30=2(l+b)

30=2(10+b)

30/2=10+b

b=15-10

breadth or width=5cm

Hope It Helps

Answer 2

Answer:

perimeter of rectangle = 2(l+b )

let the width be x

30cm = 2( 10cm + x )

30cm. = 20cm + 2x

2x = 10cm

x = 10/2cm

x= 5cm

so, width of rectangle is equal to 5cm

hope it helps you