Answer:
The answer is 8
Step-by-step explanation:
if R is equal to 10, the you subtract 10-8 which is two and multiply by four.
using pythagorean theorem
a^2 + b^2 =c^2
a^2 +8^2 =14^2
a^2 +64 = 196
subtract 64 from each side
a^2 = 132
take the square root of each side
a^2 = sqrt (132)
a=11.48912529
a =11.5
A) 2.9
B) 2.0
C) 5.0
D) 0
E) 6.0