Question

two sides of a triangle are 15cm and 20cm. The perimeter of the triangle is 50cm ​

Answer 1

Answer:

15

Step-by-step explanation:

let the third side of triangle be c

perimeter of triangle = sum of all sides

50 = 15 + 20 + c

50-35 = c

15 = c

Answer 2

Step by step explanation
P=Side + Side + Side
P=15 + 20 + (Side)
Side = 50(The perimeter) - (20 + 15)
Side =50-35
Side = 15
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