Question

I need helppppppppppppppppppppppppppppp i give 100 points whoever answers these

Answer 1

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 =
`\frac43\pi r^3` = (4/3) x
`\pi` x 6³ = 288
`\pi`

SA =
`4\pi r^2` = 4 x
`\pi` x 6² = 144
`\pi`

V : SA = 288
`\pi` : 144
`\pi` = 2 / 1

Sphere 2

Volume =
`\frac43\pi r^3` = (4/3) x
`\pi` x 9³ = 972
`\pi`

SA =
`4\pi r^2` = 4 x
`\pi` x 9² = 324
`\pi`

V : SA = 972
`\pi` : 324
`\pi` = 3 / 1

Cylinder 1

r = 3, h = 5

Volume =
`\pi r^2h=\pi 3^2 (5)=45\pi`

SA =
`2\pi rh+2\pi r^2=2\pi (3)(5)+2\pi (3)^2=48\pi`

V : SA = 45
`\pi` : 48
`\pi` = 45/48 = 15 / 16

Cylinder 2

Volume =
`\pi r^2h=\pi 7^2 (9)=441\pi`

SA =
`2\pi rh+2\pi r^2=2\pi (7)(9)+2\pi(7)^2=224\pi`

V : SA = 441
`\pi` : 224
`\pi` = 441/224 = 63 / 32