A cone has a diameter of 18 unitis and height of 8 unit's. what is it's volume

a: 72πcubic units
b:216πcubic units
c:648πcubic units
d:864πcubic units

216πubic unit

Step-by-step explanation:

A cone is a solid shape.

Volume of cone = 1/3 πr²h

Where height(h) = 8 units and diameter = 18 units, π = 3.14

Note radius (r) = diameter ➗ 2 = 18/2 = 9 units

Therefore,.

Volume of cone = 1/3 x π x r x r x h

Volume = 1/3 x πx 9  x 9 x 8

Volume = 648π➗ 3

Volume = 216πubic unit

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the answer would be a 24

step-by-step explanation:

c=2πr=2·π·3=24

you are playing an adventure game on your computer. you come across a troll who won't let you pass and there is no other way to get to the other side of the river except over the bridge he is guarding.

the troll is a nerd. he takes great delight in watching people struggle with his problems. very few get them. he only gives you one chance and then he changes the puzzle. you have to solve this one.

before you are four blocks. they are numbered 11,6, -7,21.

he tells that the answer he wants is minus and between -1 and - 2. you can use +, -, ×, ÷   ( and ) as many times as you like or no times at all. you don't like the way he's looking at you, but you need to cross the bridge. what do you do?