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Meaning of Ratio

The triangle ...

Question

The triangle ABC is given below :

AC = 5 cm and AB = 6 cm. If the perimeter of the triangle is 18 cm , then find the ratio AB : BC

7 : 5

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5 : 7

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6 : 7

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7 : 6

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Solution

The correct option is C
6 : 7

Perimeter of triangle = AB + BC + AC = 5 + 6 + BC = BC + 11

Perimeter is given as 18 cm

$∴$ BC = 18 - 11 = 7 cm

Ratio AB : BC = 6 : 7

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Similar questions

Consider the figure below:

If AB = 5 cm; QR = 7cm; then find the value of AC (in cm.), if the perimeter of $△$ ABC is 18cm.

___

In the given figure:

If AB = 5 cm , QR = 7 cm; then find the value of AC (in cm), if the perimeter of
$△ A B C$ is 18 cm.

△ A B C, A B = 7, A C = 8, B C = 9

Δ

= 10

= 7

= 9

△ A B C, A B = 6 c m, B C = 7 c m

A C = 5 c m

△ A B C

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