Agigantic balloon used for a parade is shaped like an ice cream cone. the radius of the cone and the hemisphere is 12 feet. the height of the cone is 60 feet. if the balloon with helium at the rate of 70 cubic feet per minute, about how many minutes fill the balloon? round each volume to the nearest tenth of a cubic foot, round the time to the nearest minute.

volume of
volume of
total
time to fill the

Volume of hemisphere: 10,851.84

Volume of cone: 9,043.2

Total volume: 19,895.04

Time to fill the balloon: 284 minutes

Step-by-step explanation:

To find the time, calculate the volume divide it by the rate 70 cubic feet per minute.

The volume of a cone is found using the volume formula for a cone .

Substitute h=60 and r = 12.

The volume of a hemisphere is half of the volume of a sphere . Substitute r=12.

However the hemisphere is half this so it is .

Together the volume is 10,851.84 + 9,043.2 = 19,895.04

Divide this by 70 and the float fills up in 284 minutes.

answer: 1,380

step-by-step explanation:

1: you turn %15 into a decimal by moving the decimal point two places to the left.

2: and then you multiply .15 by 1,200 , which will get you 180.00

3: from there you will add 180 to 1,200

4: which will get you 1,380

hope it *im kind of slow so idk if my answer is right*

dont think so

step-by-step explanation: