Herons Formula - Grade 9 (Question: 1605706845)
Refer to the figure below. The described circle is tangent to side DE of triangle DEF. DE = 15cm, EF = 30cm and FD = 40cm
Figure:
Find the radius (r) of the circle.
A. 7.50 cm
B. 6.50 cm
C. 6.95 cm
D. 7.95 cm
