hi,
Circumradius of an isosceles triangle can be calculated using the formula
R= a/2sinA
=a^2/root(4a^2-b^2)
and the formula for inradius is
r= (b/2)root((2a-b)/(2a+b))
area = a^2/2
you can use these formulas
Question : $\triangle$ XYZ is a right-angled triangle and $\angle$Y = 90° If XY = 2.5 cm and YZ = 6 cm, then the circumradius of $\triangle$XYZ is:
Option 1: 6.5 cm
Option 2: 3.25 cm
Option 3: 3 cm
Option 4: 2.5 cm
Question : In an equilateral triangle inradius is 4 cm. What is the circumradius?
Option 1: 6 cm
Option 2: 8 cm
Option 3: 12 cm
Option 4: 2 cm
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