Use a=

r^2 (r represents your radius of 4 feet)

(4^2)
Answer = 16

^2
Answer:
But, you didn't ask any question.
Step-by-step explanation:
Remember to post your question next time.
84/60=1.4
210/1.4=150
The answer is 150 cm
6p+10p+15-9
16p+6 will be your final answer
There is a little-known theorem to solve this problem.
The theorem says that
In a triangle, the angle bisector cuts the opposite side into two segments in the ratio of the respective sides lengths.
See the attached triangles for cases 1 and 2. Let x be the length of the third side.
Case 1:
Segment 5cm is adjacent to the 7.6cm side, then
x/7.6=3/5 => x=7.6*3/5=
4.56 cm
Case 2:
Segment 3cm is adjacent to the 7.6 cm side, then
x/7.6=5/3 => x=7.6*5/3=
12.67 cmThe theorem can be proved by considering the sine rule on the adjacent triangles ADC and BDC with the common side CD and equal angles ACD and DCB.