Question
Answer:
:
Join the centre of the circle and the vertices of the triangle. Observe that the sides of the triangle become the tangents to the circle. Hence, the radii of the circle as shown in the question become the heights of the smaller triangles.
According to formula
12 (r) (sum of sides) = area of triangle
12 (r) ( 3+ 4 + 5) = 12 × 3 × 4
r = 1 cm
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:
Join the centre of the circle and the vertices of the triangle. Observe that the sides of the triangle become the tangents to the circle. Hence, the radii of the circle as shown in the question become the heights of the smaller triangles.
According to formula
12 (r) (sum of sides) = area of triangle
12 (r) ( 3+ 4 + 5) = 12 × 3 × 4
r = 1 cm
Was this answer helpful ?
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