Question

2 sides of a triangle are 15cm and 2o cm . the perimeter of the triangle is 50 cm. what is the third side?

Answer 1

Answer:

15 cm

Step-by-step explanation:

perimeter = side1+side2+side3

here side1 = 15

side2 = 20

and perimeter = 50 cm

so side3 = 50-(15+20)

=15 CM

Answer 2

Answer:

a+b+c = 50 cm

Step-by-step explanation:

20 cm + 15 cm + c = 50 cm

35 cm + c = 50 cm

c = 50 cm - 35 cm

= 15 cm

third side = 15 cm

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