<u>Figure - 1</u> :
Let the missing side as " n "
Therefore the sides will be proportional,
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<u>Figure - 2</u> :
Let the missing side as " m "
The Triangles are similar, therefore their sides will be proportional.
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The computation shows the radius of the circle that is inscribed in the isosceles triangle will be 3.33cm.
<h3>How to calculate the radius?</h3>From the information given, the isosceles triangle the length of a base is 10 cm and the length of a leg is 13 cm.
Let A = area of the triangle
Let S = semi perimeter of the triangle.
The radius will be: = A/S
where,
The radius will be:
= 3.33cm
In conclusion, the radius is 3.33cm.
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