Question

The sides of a rectangle are in the ratio 3:4.If the perimeter is 28cm,calculate its sides

Answer 1

$\huge{\text{\underline{Question:-}}}$

$\blue\bigstar$The sides of a rectangle are in the ratio 3:4.If the perimeter is 28cm.Calculate its sides.

$\huge{\text{\underline{Solution:-}}}$

$\sf\pink{Given\:Ratio:-}$ 3:4

$\longrightarrow$To find sides :-

$\black\bigstar$Let the common ration be x

A.T.Q

$\sf\green{We\:Have\::-}$

$\implies$ Perimeter of triangle = 2 ( Length + Breadth)

28cm=2(3x+4x)

$28 \div 2 = 7x$

14= 7x

$x = 14 \div 7 = 2$

Hence x = 2

$\rule{200}3$

$\pink\bigstar$So the missing sides :-

3x=3(2)=6

4x=4(2)=8

$\longrightarrow$Hence the sides if rectangle are 6 CM and 8 CM.

Answer 2

Answer:

hope it will help

Step-by-step explanation:

Let the sides be x

Length of rectangle(l) = 3x

breadth of rectangle(b) = 4x

Perimeter of rectangle(p)= 28cm

we know,

Perimeter of rectangle(p) = 2(l+b)

                                      28 = 2(3x+4x)

                                     28  = 2(7x)

                                      28 = 14x

                                    28/14 = x

                                          2 = x

                                          x = 2cm

now,

Length of rectangle(l) = 3x = 3× 2 = 6cm

Breadth of rectangle(b) = 4x = 4 × 2 = 8 cm