Question

(iv) Let us calculate the area of a circular region circumscribe a triangle of which sides
are 3 cm, 4 cm and 5 cm.
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Answer 1

answer:

Answer

Given: Area of the circumscribing circular region = 462 cm2

Circle is centered at A.

∵ Area of a circle = πr2

⇒ r = 7√3

So, the radius of the circum circle of this triangle = 7√3 cm.

The centroid of equilateral triangle is at A and lies on height BE.

⇒ BE = 10.5√3 cm

Height of equilateral triangle = 10.5√3 cm

Height of equilateral triangle

⇒ Side of the triangle = 21 cm

hence 21cm is the correct answer pls mark me as brainlist pls ❤️❤️