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प्रश्न
If the areas of two circles are the same, they are congruent.
पर्याय
True
False
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उत्तर
This statement is True.
Explanation:
Because the areas of two circles will be equal only if their radii are equal and circles with the same radii will superimpose each other.
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In triangle PQR, angle Q = 90°, find: PQ, if PR = 34 cm and QR = 30 cm
From given figure, In ∆ABC, If AC = 12 cm, then AB = ?

Activity: From given figure, In ∆ABC, ∠ABC = 90°, ∠ACB = 30°
∴ ∠BAC = `square`
∴ ∆ABC is 30° – 60° – 90° triangle.
∴ In ∆ABC by property of 30° – 60° – 90° triangle.
∴ AB = `1/2` AC and `square` = `sqrt(3)/2` AC
∴ `square` = `1/2 xx 12` and BC = `sqrt(3)/2 xx 12`
∴ `square` = 6 and BC = `6sqrt(3)`
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