Herons Formula - Grade 9 (Question: 1605705782)
Refer to the figure below. The described circle is tangent to side DE of triangle DEF. DE = 15cm, EF = 30cm and FD = 40cm
Figure:
1. Find the semi-perimeter of the triangle.
A. 42.50 cm
B. 85 cm
C. 60 cm
D. 45.20 cm
