Question

The perimeter of an isosceles triangle is 42cm and its bas 1 *1\2times each of the equal sides find the length of each side of the triangle. The area of the triangle and the height of the triangle.

Answer 1

let base be 3a and each side 2a. perimeter is 42 thus sides are 18. 12. 12. height=sqrt(12^2- 9^2)= 7.9372. Area=9*7.9372=71.4353. From heron area=sqrt(21*3*9*9)=71.5353

Answer 2

hope it helps

regards
Mohit Khairnar