Answer:
Step-by-step explanation:
Least common denominator is 10
there are 10/10 portions in the whole circle
1/2 = 5/10
2/5 = 4/10
10/10 - 5/10 - 4/10 = 1/10
The answer is C
I pick that answer because you have divide
1. Square Pyramid.
2. Cone
positive is the correct answer
EA