Which expression can be used to find the volume of the sphere?

A sphere with diameter 10 inches.

π

Step-by-step explanation:

Find radius,

10 ÷ 2 = 5

r = 5 inches

Sub into equation,

π

= π

≈ 523.5988

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m