Step-by-step explanation:
5 + d > 5 - d
5 + d + d > 5
5 + 2d > 5
2d > 5 - 5
2d > 0
d > 0 ÷ 2
d > 0
Answer:
(a). and (b).
2TTr3/ 3.14 if you remember the is half a diameter in side of the hemisphere coming from a 7th grader