Answer:
The awnser in the first option. A
Diameter = 2radius
So 25+25=50
Answer:
D
Step-by-step explanation:
The opposite faces are congruent, that is the surface area (SA) is
SA = top/ bottom + 2 sides + front/ back
= (3 × 2) + (3 × 2) + (2 × 5) + (2 × 5)+ (3 × 5) + (3 × 5)
= 6 + 6 + 10 + 10 + 15 + 15
-5s⁴ - 12rs² + 33s³ + 65r² - 63rs - 18s²