Two sides of triangle are 10 cm,15 cm, the perimeter of triangle is 30 cm then find the third side of triangle
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Two sides of triangle are 10 cm,15 cm, the perimeter of triangle is 30 cm then find the third side of triangle
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Answer:
5 cm
Step-by-step explanation:
the sum of all sides called as the perimeter of and figure
so, side 1 + side2+ side 3 = perimeter
let's the length of unknown side be X cm
then,
10cm+15cm+Xcm= 30cm
X =30cm-25cm
X =5cm
Answer:
side a = 10cm
side b= 15cm
Let the length of the third side be x cm.
The length of the other two sides is 10 cm and 15 cm.
Now, the Perimeter of triangle = 30 cm
10 + 15 +x = 30
25+x=30
x=30-25
x=5cm
now for checking
10+15+5=30
30=30
so our answer is right
the third side of triangle measures 5 cm