two side of triangle are 12cm and 9cm and the semi perimeter is 19 then find the third side
Share
two side of triangle are 12cm and 9cm and the semi perimeter is 19 then find the third side
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Therefore, 19=1/2* perimeter
Therefore, your perimeter is 38cm
Let the third side be x
12+9+ x =38
21+ x=38
Therefore your answer of the third side is 17 cm
☆Given :
full perimeter = 19 + 19
= 38 cm
38cm = 12 + 9 + x
38 cm = 21 cm + x
3rd side = 17 cm