A cone has a base radius of 7 centimeters and a height of 21 centimeters.What is the volume of the cone?

A.
28π cm3

B.
49π cm3

C.
147π cm3

D.
343π cm3
there is no pic

Answers

Answer 1

Answer: V=(1/3)hpir^2
r=7
h=21
V=(1/3)21pi7^2
V=7pi49
V=343pi cm^3

answer is D

Answer 2

Answer: V= π·r²·h/3 is the formula to calculate this.

So, V= 3.14 · 7² · 21/3

Remember to use PEMDAS

Exponents are first so:

V= 3.14 · 49 · 21/3

Now division:

V= 3.14 · 49 · 7

Now multiply from left to right:

V= 153.86 · 7

V= 1077.02

But, in your case, the answer is D) 343π cm³

Related Questions

candice bought 3 shirts. each shirt cost the same amount and was discounted by $3.66. candice paid a total of $62.31 before tax.how much did each shirt cost before the discount?
What is the greatest common factor of 12 and 16
I am thinking of two numbers. Their sum is 17. One number is 5 more than the other. What are the two numbers?
Three times a number increased by 7 gives the same result as four times the number increased by 5? Heeellllpppp
Find the unknown side length for the parallelogram. Area = 98 m2A.882 mB.441 mC.10.89 mD.0.092 m

Isaac used 1/4 of an ounce of nuts to make 1/12 pound of cake

Answers

Do 1/12 + 1/4 which would be 4/12 simplified to 1/3

4 1
---- = -----
12 3

Hope I helped:):)

(3 feet,9 inches)+(2 feet,11 inches)= feet, inches

Answers

Hi there, 3 feet + 2 feet= 5 feet and 9 inches + 11 inches = 20 inches. Therefore the answer is 5 feet, 20 inches

Write each decimal as a fraction or mixed number in simplest form.1.) 0.83
2.) 3.75
I need the answer to these two, for the 0.83 I got 83/100

Answers

It is 83/100 and the other would be 3 3/4.

The answer are
1. 83/100
2. 3 and 3/4 or 15/4

There are 15 black mice in a cage. The ratio of all mice to black mice is 5:1. How many mice are in the cage?

Answers

From the ratio 5:1 we know that all mice is 5 times more than black.
Knowing that there are 15 black mice we can multily it by 5 to find the answer.
15*5=75- its the anser

Is 7/20 equal to 0.07