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Construction of Incircle

Area and peri...

Question

Area and perimeter of a $△ A B C$ is 40 and 8. What is the radius of the incircle of the triangle?

20

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10 \sqrt{2}

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10

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5 \sqrt{2}

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Solution

The correct option is B $10$
$Δ = 40$ and $2 s = 8 ⟹ s = 4$

$r = \frac{Δ}{s} = \frac{40}{4} = 10$

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Similar questions

A B C

360

m^{2}

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A B C

P Q R

450

{in}^{2}

150

P Q R

4

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A B C

A B, B C

A C

P, Q

R

O

A B C,

I.

△ O B C

\frac{1}{2} \times B C \times radius of incircle

II.

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III.

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\frac{1}{2} \times perimeter of △ A B C \times radius of incircle

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