Question

the side of triangle are in the rqtio 1:3:5 and its perimeter is 90cm find the length of its largest side​

Answer 1

Answer:

50 cm

Step-by-step explanation:

Ratio=1:3:5

Let the common factor be x.

ATP

x+3x+5x=90

9x=90

x=10

Therefore the largest side=5x=5 ×10=50 cm

Answer 2

Answer:

The longest side is 50 cm.

Step-by-step explanation:

Given :

Ratio of the sides = 1 : 3 : 5

Perimeter = 90 cm

To find :

Length of the longest side

Solution :

Let the sides be -

• One as x
• Second as 3x
• Third as 5x

★ Perimeter = Sum of all sides

⇒ 90 = x + 3x + 5x

⇒ 90 = 9x

⇒ x = 90/9

⇒ x = 10

$\rule{300}{1.5}$

★ Value of 3x

⇒ 3(10)

⇒ 30

Measure = 30 cm

$\rule{300}{1.5}$

★ Value of 5x

⇒ 5(10)

⇒ 50

Measure = 50 cm

Longest side = 50 cm

$\therefore$ The longest side is 50 cm.