Ireally need these 3 questions pleees

1. whats the volume of a sphere

2. whats the volume of a cone

3. find radius given diameter

➷ 1) The formula for volume of a sphere is:

r is the radius

To find the volume, you would just substitute the radius into that formula to get the volume

2) The formula for volume of a cone is:

Again, just substitute the radius in and solve.

3) The radius is half of the diameter so you would just divide the diameter by 2.

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ ʜᴀɴɴᴀʜ ♡

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,