perimeter of a triangle is 36 cm. find the third side if the two sides are 9 cm and 12 cm respectively.
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perimeter of a triangle is 36 cm. find the third side if the two sides are 9 cm and 12 cm respectively.
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Step-by-step explanation:
Perimeter is sum of length of all sides.
Therefore, 36= x +9+12 (x is length of unknown side)
x= 15cm
Thus the length of unknown side is 15cm.
Answer:
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Step-by-step explanation:
Your Answer-
The Third Side - x
Perimeter of Triangle -36
Sum of All Side - 36
9 + 12 + x = 36
21 + x = 36
x = 36 - 21
x = 15
So The Third Side is 15