Ahemispherical wooden bowl has an internal radius of 8cm and an external radius of 9cm
calculate the volume of the wood

Step-by-step explanation:

We have a hemisphere with a radius 9 cm with a hemisphere cut out with radius 8cm.

Calculate a volume of a larger hemisphere and subtract from it a volume of smaller hemisphere.

The formula of a volume of a sphere:

R - radius

Therefore the formula of a volume of a hemisphere:

The volume of the larger hemisphere:

The volume of the smaller hemisphere:

The volume of wood:

Substitute:

454.5 cm³

Step-by-step explanation:

The volume (V) of a sphere is calculated using formula

V= πr³ ← r is the radius

Thus the volume (V) of a hemisphere is

V = × πr³ = πr³

= -

                               = π × 9³ - π × 8³

                              = π (9³ - 8³)

                             = π (729 - 512 )

                            = π × 217 ≈ 454.5 cm³

answer: i'm great at algebra

~coco

step-by-step explanation:

75

step-by-step explanation:

you do x-29=46 (the number of cantaloupes sold)

in order to find x, you have to find what minus 29 equals 46, meaning you'd have to add 29 to 46.

29+46=75

if you replace x with 75, the equation looks like:

75-29=46

x=75