Question

two sides of a triangle are 12 cm and 15 cm. if the perimeter of the triangle is 40 cm, find the third side.​

Answer 1

Answer:

Go through the above image

Answer 2

Answer:

first side=12cm

second side=15 cm

let the third side =x

perimeter=40cm

formula = A+B+C =40 cm

=12 cm+15 cm + x =40 cm

27cm + x = 40 cm

x = 40 cm - 27 cm

x= 13 cm

the third side =13 cm

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