3. Find the volume of the sphere. (6cm)

36π cm3

12π cm3

288π cm3

864π cm3

4. Find the best approximation of the volume of the sphere. (28cm)

3660 cm3

11,500 cm3

92,000 cm3

6470 cm3

The volume of any sphere is (4/3) (pi) (sphere's radius) ³.

Number 3:

If that "6cm" in parentheses is the sphere's diameter, then its radius is 3cm,

and its volume is

(4/3) (pi) (27) = 36π cm³.

If that "6cm" in parentheses is the sphere's radius, then its volume is

(4/3) (pi) (216) = 288π cm³.

Number 4:

If that "28cm" in parentheses is the sphere's diameter, then

its radius is 14cm, and its volume is

(4/3) (pi) (2744) = 3,858π cm³.

The best estimate is 11,500 cm³.

If that "28cm" in parentheses is the sphere's radius, then its volume is

(4/3) (pi) (21,952) = 29,269-1/3 π cm³.

The best estimate is 92,000 cm³.

V = ⁴/₃πr³

V = ⁴/₃ (3.14) (6) ³

V = ⁴/₃ (3.14) (216)

V = ⁴/₃ (678.24)

V = 904.319774cm³

V = 288πcm³

V = ⁴/₃πr³

V = ⁴/₃ (3.14) (28) ³

V = ⁴/₃ (3.14) (21,952)

V = ⁴/₃ (68,929.28)

V = 91,905.7067cm³

V = 29,269πcm³