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Answer:
Cube 2
Volume = 9 x 9 x 9 = 729
SA = 9 x 9 x 6 = 486
V : SA = 729 : 486 = 729/486 = 3 / 2
Sphere 1
Volume = [tex]\dfrac43\pi r^3[/tex] = (4/3) x [tex]\pi[/tex] x 6³ = 288[tex]\pi[/tex]
SA = [tex]4\pi r^2[/tex] = 4 x [tex]\pi[/tex] x 6² = 144[tex]\pi[/tex]
V : SA = 288[tex]\pi[/tex] : 144[tex]\pi[/tex] = 2 / 1
Sphere 2
Volume = [tex]\dfrac43\pi r^3[/tex] = (4/3) x [tex]\pi[/tex] x 9³ = 972[tex]\pi[/tex]
SA = [tex]4\pi r^2[/tex] = 4 x [tex]\pi[/tex] x 9² = 324[tex]\pi[/tex]
V : SA = 972[tex]\pi[/tex] : 324[tex]\pi[/tex] = 3 / 1
Cylinder 1
r = 3, h = 5
Volume = [tex]\pi r^2h=\pi 3^2 (5)=45\pi[/tex]
SA = [tex]2\pi rh+2\pi r^2=2\pi (3)(5)+2\pi (3)^2=48\pi[/tex]
V : SA = 45[tex]\pi[/tex] : 48[tex]\pi[/tex] = 45/48 = 15 / 16
Cylinder 2
Volume = [tex]\pi r^2h=\pi 7^2 (9)=441\pi[/tex]
SA = [tex]2\pi rh+2\pi r^2=2\pi (7)(9)+2\pi(7)^2=224\pi[/tex]
V : SA = 441[tex]\pi[/tex] : 224[tex]\pi[/tex] = 441/224 = 63 / 32