Question

In the given figure, AB = 30 cm and CD = 24 cm. What is the value (in cm) of MN?

A) 18 B) 9 C) 12 D) 15

Answer 1

Answer:

where is the figure???plz draw the figure then ask the question please?......

Answer 2

Answer:

$\sf{\bold{\red{\huge{\underline{\underline{QUESTION}}}}}}$

In the given figure, AB = 30 cm and CD = 24 cm. What is the value (in cm) of MN?

$\sf{\bold{\green{\huge{\underline{\underline{answer}}}}}}$

18

Given:

figure.

AB = 30

CD = 24

To find:

the value of MN?

step by step explanation:

given , CD = 24

so , let's find AC and DB

30 - 24 = 6 ÷ 2 = 3 ( Given , AB = 30 )

∴ AC , DB = 3 cm

To find MN we need to:

$\sf radius \: of \: inner \: circle = \frac{24}{2} = 12cm$

$\sf radius \: of \: outer \: circle = \frac{30}{2} = 15cm$

according to pythagorean triplet :

as we know 9,12,15 is Pythagorean triplet.

so , till the center of the two circles it is 9cm

thus , 9 × 9 = 18cm

therefore,

MN = 18cm