Question

the width of a rectangle is three fourth of its length find the dimension of a rectangle it is peri
meter is 28 am​

Answer 1

Answer:

Step-by-step explanation:

let, breadth to be x

According to question

______________

length=3/4x

perimeter=28cm

2(l+b)=28cm

2(x+3x/4)=28cm

x+3x/4=28/2=14cm

4x+3x/4=14cm

7x/4=14cm

7x=14×4cm

7x=56cm

x=56/7cm

x=8cm

length=3/4x

=3/4×8

=6cm

width =x

=8cm

Answer 2

Given :

• b = ¾ l

• Perimeter = 28 cm

To Find :

• The dimensions of reactangle = ?

Procedure :

★ Perimeter = 28 cm ★

➩ 2 (l + b) = 28 cm

➩ 2 (l + ¾ l) = 28 cm

➩ 2 (4l + 3l/4) = 28 cm

➩ 7l/2 = 28 cm

➩ 7l = 28 × 2

➩ 7l = 56

➩ l = 56/7

➩ l = 8 cm

Now,

Breadth = ¾ l = ¾ × 8 = 6 cm

Therefore, the dimensions of reactangle is 8 cm and 6 cm.