Two sides of a triangle measure 20cm and 25cm . If the semiperimeter of the triangle is 32cm ,then the length of the third side is _ cm.
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Two sides of a triangle measure 20cm and 25cm . If the semiperimeter of the triangle is 32cm ,then the length of the third side is _ cm.
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Answer:
19 cm
Explanation:
let x = the 3rd side
20+ 25+x/2 = 32
20+25+x = 32×2
45 + x = 64
x = 64 - 45
x = 19
Explanation:
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