If the half of the perimeter of a triangle is 9 cm, find the perimeter of the triangle.
The semi-perimeter of an isosceles triangle is 12 cm. The length of its unequal side is 10 cm.
What is the length of each equal side of the triangle?
The length of the longest chord of the circle is 9 cm then find the length of the diameter.
Question 141
The length of two sides of an isosceles triangle are 9 cm and 20 cm. What is the perimeter of the triangle? Given reason.