D.................................
Answer:
r=60°
Step-by-step explanation:
Both of the angles together make up 90°. we know this because of the red little box denoting 90°.
If one of the angles is 30°, to find the other one, simply subtract 30 from 90.
90-30=60
r=60°
Answer:
pls mark brainliest ......
Answer:
Circumference is 43.98 inches
Step-by-step explanation:
Circumference = 2πr
= 2×3.14 ×7
= 43.98