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3 years ago

If a bicycle wheel has a diameter of 21 inches what the exact circumference?

Mathematics

1 answer:

Blababa [14]3 years ago

6 0

Answer:

Circumference = 65.97344573

Step-by-step explanation:

Given the diameter of a circle, we can use the formula C = πd to find the circumference.

C = circumference

π = pi

d = diamater

Equation: 21(π) = 65.97344573

Make sure to round to whatever decimal place is asked for!

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Ted needs an average of at least 70 on his three history test he has scored already 85 and 60 on two test what is the minimum gr

PilotLPTM [1.2K]

So average=(total of scores)/(number of tests)
needs at least average of 70
at least is represented as greater than or equal to or the sign (>)
70>(total)/(number oftests)

since we have 3 tests, we have to have 3 scores so
70>(x+y+z)/3
he scored 85 and 60
70>(x+85+60)/3 (doesn't matter which to subsitute)
70>(x+145)/3
multiply obht sides by 3
210>x+145
subtract 145 from both sides
65>x
he needs to get at leas 65 on his third test

4 0

3 years ago

What are the relationships between inscribed, central, and circumscribed angles of a circle?

Delicious77 [7]

Answer:

Topics include the relationship between central, inscribed, and circumscribed angles; inscribed angles on a diameter are right angles; the radius of a circle is perpendicular to the tangent where the radius intersects the circle. Common Core: HSG-C.A.2

Step-by-step explanation:

PA BRAINLIEST

8 0

2 years ago

2 and the square root of 81 + the square root of 64

Veseljchak [2.6K]

Answer:

74.5

Step-by-step explanation:

i did it on my calculator and it says it is 74.5.

5 0

3 years ago

Jake volunteers to help out his younger brother's basketball team in his free time. One of his tasks is to ensure that all the b

Aneli [31]

Answer:

The volume is 2140.98 inches³

Step-by-step explanation

The basketballs are spherical, and it is known that the volume of a sphere is

$V = \frac{4}{3}\pi r^{3}$

Where V is the volume of the ball and r is its radius

They tell us that the ball measures 8.8 inches wide. This means that its diameter is 8.8 inches.

It is known that the radius of a sphere is equal to half its diameter.

Therefore, the radius r of the ball is:

$r = \frac{8.8}{2}$

r = 4.4 inches.

Then, they tell us to consider that the walls of the ball are infinitely thin, which means that we should not take into account their thickness in the calculation of the volume.

We already have all the data we need, now we proceed to calculate the volume.

$V = \frac{4}{3}\pi(4.4)^{3}\\V = 356.83 inches^{3}$

Where V is the volume of only one of the balls

The volume of the six balls is V = 6 * 356.83 = 2140.98 inches³

Finally the volume is 2140.98 inches³

4 0

2 years ago

Read 2 more answers

Sam ran 63,756 feet in 70 minutes. What is Sam's rate in

AlladinOne [14]

Answer:

Sam's speed is about 10.3 mi/h.

Step-by-step explanation:

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2 years ago