The sides of a triangle are in the ratio 3:5:7 and its perimeter is 30 cm.

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RRB TA Exam (Malda) 2008 click here to view all questions

The sides of a triangle are in the ratio 3:5:7 and its perimeter is 30 cm. The length of the greatest side of the triangle in cm is

A6

B10

C14

D16

ranjith ? Jul 2 '2017 at 11:7

Answer is 14

Explanation:

Let the sides of the triangle be 3x,5x and 7x units.

According to the questions

3x+5x+7x=30

=> 15x = 30

\(x = \frac{30}{15} =2\)

Largest side = 7x

\(= 7 \times 2\)

=14

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Answer is 14 Explanation: Let the sides of the triangle be 3x,5x and 7x units. According to the questions 3x+5x+7x=30 => 15x = 30 \(x = \frac{30}{15} =2\) Largest side = 7x \(= 7 \times 2\) =14 ranjith ? answered Jul 2 '2017 at 11:7 All Comments

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