All categories

3 years ago

if the circumference of a round barn is 56 meters, what is the diameter of the barn to the nearest whole number? use 3.14 for pi

Mathematics

1 answer:

jeka57 [31]3 years ago

7 0

circumference = 2 x pi x r

56 = 2 x 3.14 x r

56 = 6.28 x r

r = 56/6.2

r = 8. 917

d = 8.917*2 = 17.8

diameter = 18 meters

You might be interested in

75 points. Will give certified if work is shown and the answer is correct.

Svetach [21]

Volume of the first dwarf planet (r₁ = 832 mi):

$V_1=\dfrac{4}{3}\cdot\pi\cdot r_1^3=\dfrac{4}{3}\cdot\pi\cdot 832^3=\dfrac{2303721472}{3}\pi\approx7.679\cdot10^8\pi\,\text{mi}^3$

Volume of the second dwarf planet (r₂ = 829 mi):

$V_2=\dfrac{4}{3}\cdot\pi\cdot r_2^3=\dfrac{4}{3}\cdot\pi\cdot 829^3=\dfrac{2278891156}{3}\pi\approx7.5963\cdot10^8\pi\,\text{mi}^3$

So difference between the volumes is:

$V_1-V_2\approx7.679\cdot10^8\pi-7.5963\cdot10^8\pi=0.0827\cdot10^8\pi=\boxed{8270000\pi\,\text{mi}^3}$

or if we want exact value (we use (a³-b³) = (a-b)(a²+ab+b²) ):

$V_1-V_2=\dfrac{4}{3}\cdot\pi\cdot r_1^3-\dfrac{4}{3}\cdot\pi\cdot r_2^3=\dfrac{4}{3}\pi(r_1^3-r_2^3)=\dfrac{4}{3}\pi(832^3-829^3)=\\\\\\=\dfrac{4}{3}\pi(832-829)(832^2+832\cdot829+829^2)=\\\\\\=\dfrac{4}{3}\pi\cdot3(692224+689728+687241)=4\pi\cdot2069193=\boxed{8276772\pi\,\text{mi}^3}$

3 0

3 years ago

PLS HELP ASAP THANKS ILL GIVE BRAINLKEST PLS PLS HELP ASAP ILL GIVE BRAINLKEST PLS

faltersainse [42]

Answer:

first one is 42/7 = 6

11*6 = 66

second one

1/2 inch = 3/2 feet

17/2 inches = 17*3 = 51/2 = 25.5

8 0

2 years ago

Read 2 more answers

Heyy i need help on this maths q

Vikki [24]

Answer:

:) :D

Step-by-step explanation:

6 0

3 years ago

What does Express $4 as a percentage of 50$ mean?

Gwar [14]

That kinda means to see how many times 4 goes into 50 and write that as a percentage. Hoped I helped

4 0

3 years ago

The following set of ordered pairs represent a function:

MAXImum [283]

Eeeeeeeeeeeeeeeeeeeeeeeee

4 0

3 years ago