Hard Math Class 9 Level 1

If the angles of a linear pair are in the ratio 5:7 then what is their difference?

यदि रैखिक युग्म के कोणों का अनुपात 5:7 है तो दोनों कोणों का अंतर कितना होगा?

A 20° / 20° B 25° / 25° C 30° / 30° D 35° / 35°
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Correct Answer

C. 30° / 30°

Explanation

The 12 parts equal 180° so one part is 15° and the difference is 2 parts or 30°.

12 भाग 180° हैं इसलिए एक भाग 15° और अंतर 2 भाग यानी 30° है।

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What is the area of a circle with radius 7 cm when π = 22/7?

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