Question

The length and breadth of a rectangle is 25cm amd 15 cm .Find ratio of
(a)its length to its breadth
(b)its length to its perimeter
(c)its breadth to its perimeter

Answer 1

a = 25/15= 5/3
b= 25/80= 5/16
c= 15/80= 3/16
(a) length= 25
breadth = 15
ratio = length \breadth
25/15= 5/3
(b) length - 25
perimeter 2(l+b)
perimeter = 2(25+15)
perimeter = 80
ratio = length /perimeter
ratio = 25/80=5/16
(c) breadth - 15
perimeter = 80
ratio = breadth / perimeter
ratio = 15/80 =3/16

Answer 2

$\:\:\:\: \Large \underline {\sf{Given\::}}$

➟ The length and breadth of a rectangle is 25 cm and 15 cm respectively

$\:\:\:\: \Large \underline {\sf{To\:Find\::}}$

➟ Ratio of

its length to its breadth

its length to its perimeter

its breadth to its perimeter

$\:\:\:\: \Large \underline {\sf{Solution\::}}$

➟ Let us find the perimeter of rectangle

$\:\:\:\: \large \underline{\boxed{\sf{\pink{Formula\:used\::}}}}$ $\sf 2(l\:+\:b)$

➟ 2( 25 + 15 )

➟ 2 ( 40 )

➟ 80 cm

$\:\:\:\: \bigstar \: \large \underline {\sf{Perimeter\:=\:80\:cm}}$

• Let us find the Ratio :

(a) its length to its breadth

= 25 : 15 = 5 : 3

$\:\:\:\: \rightarrow \large \underline {\sf{Ratio\:=\:5:3}}$

(b) its length to its perimeter

= 25 : 80 = 5 : 16

$\:\:\:\: \rightarrow \large \underline {\sf{Ratio\:=\:5:16}}$

(c) its breadth to its perimeter

= 15 : 80 = 3 : 16

$\:\:\:\: \rightarrow \large \underline {\sf{Ratio\:=\:3:16}}$

Final ans is :

(a) 5:3

(b) 5:16

(c) 3:16

And we are done !

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