Answer:
Step-by-step explanation:
a) r = 10/2 = 5 feet
Area of floor =πr² =3.14*5*5 = 78.5 feet²
B) h = 3 foot
Volume of cylinder = πr²h = 3.14*5*5*3 = 235.5 cubic feet
Volume of hemisphere =2/3πr³= 2*3.14*5*5*5/3=261.67 cubic feet
Volume of space inside the observatory = 497.17 cubic feet
Answer:
so B is the answer 
Step-by-step explanation:
You can find additive inverse to find integers and their opposites closed under addition.
Answer:
its 30 a
Step-by-step explanation:
Answer:
21
Step-by-step explanation:
