find the area of traiangle whose two sides are 18cm and 10cm and the perimeter is 42 cm
find the area of traiangle whose two sides are 18cm and 10cm and the perimeter is 42 cm
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.
perimeter of a triangle = sum of all sides
so,
let the unknown side be x
so,
18+10+x=42
28+x=42
x=42-28
x=14
so,
the third side =14cm
first tell me base ? and height ? then apply formula