What is the length of the inradius of the triangle whose sides are 18,24 and 30cm?
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Answer:
6
Step-by-step explanation:
To find the inradius you use the formula K=rs. K is the area of the triangle. You can find the area and semipermimeter using herons formula. The area of the triangle is 216 and the semipermimeter is 36. 216=36x where x is the inradius. 216/36 = x or 6 = x
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