The answer would be true.
I think it is d because it would be 15 x b = 60. Hope I got this right
Hypotenuse^2=12^2+5^2=144+25=169
⇒ hypotenuse =V169=13 cm
C=2pi(r)
Pi=3.14
r=5.5
So C=2(3.14)(5.5)=34.56
So the circumference is 34.56 mi
And the area is A=pi(r)²
So you have
A=3.14(5.5)²
So A=95.03 mi²
So the area is 95.03 mi² and the circumference is 34.56 mi
Hope this helps!