Answer:X3
Step-by-step explanation:UwU =( ̄□ ̄;)⇒
(5.1 * (10-3)) + (3.2 * (10-3))
(5.1 * 7) + (3.2 * 7)
35.7 + 22.4
58.1
So 58.1 is the final answer! Hope this helps!
Call the radius r and the height of the cone h. The formula for the volume of a cone is r^2*h*pi/3, and the formula for the volume of a sphere is 4r^3/3, so half of a sphere has volume 2r^3/3. Adding these, our answer is:
18. -500 + 250 = -250
19. -550 - 300 = - 850
20. 116 - (-50) = 116 + 50 = 166
21. 2500 + 1800 - 2200 = 2100