Find the area (in cm2 ) of a right triangle whose inradius is 4cm and circumradius is 10cm?
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6
Answer:
96
Step-by-step explanation:
circumradius = h/2
a2 + b2 = h2
--> h = 20
inradius = (a + b - h)/2 = 4
(a+b-20) = 8
--> a+b = 28
a2 + b2 + 2ab = 784
20^2 + 2ab = 784
2 ab = 784- 400 = 384
--> ab/2 (area) = 384/ 4 = 96
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