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:
Question : In an equilateral triangle inradius is 4 cm. What is the circumradius?
Question : The base of a right prism is a right-angled triangle whose sides are 5 cm, 12 cm, and 13 cm. If the area of the total surface of the prism is 360 cm2, then its height is:
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile