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Lorico [155]
3 years ago
6

Find the Circumference and Area of the circle with a diameter of 3 inches.

Mathematics
2 answers:
NeX [460]3 years ago
5 0

Answer:

C≈9.42in

A≈7.07in²

Step-by-step explanation:

C=2πr

d=2r

C=πd=π·3≈9.42478in

A=πr2

d=2r

A=1

4πd2=1

4·π·32≈7.06858in²

Hope this helps!

Vsevolod [243]3 years ago
4 0

Answer:

Circumference-18.84956, rounded, 18.85

Area- 28.27433, rounded-38.27

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Find the volume of the composite solid. Round your answer to the nearest tenth.
EastWind [94]

Answer:

646.04 cm³

Step-by-step explanation:

<u>Cube volume formula:</u>

V=l*w*h

V=8*8*8

V=512

<u>Hemisphere volume formula:</u>

V=(4/3πr³)1/2

V=(4/3π4³)1/2

V=128/3

<u>Add both together</u>

128/3 + 512 ≈ 646.04cm³

4 0
3 years ago
it takes the earth 24 hours to complete a full rotation it takes Saturn 10 hours and 39 seconds to complete a full rotation how
OLEGan [10]

we know that

1 hour is--------> 60 minutes

1 minute is---------> 60 sec

so

10 hour =10*60=600 minutes

39 sec=39/60=0.65 min

10 h 39 sec=600+0.65=600.65 min

therefore

<u>the answer is</u>

600.65 minutes

7 0
3 years ago
Use the inverse of the function y = x2 − 18x to find the unknown values.
Lerok [7]

ANSWER

b=1, c=81, and d=9.

EXPLANATION

The given function is:

y={x}^{2}-18x

This function is the same as:

y={(x - 9)}^{2}-81

To find the inverse of this function, we interchange x and y.

x={(y-9)}^{2}-81

Solve for y:

x+81={(y- 9)}^{2}

Take square root of both sides:

\pm \sqrt{x + 81}=y-9

y=\pm \sqrt{x + 81}+9

Hence,

b=1, c=81, and d=9.

7 0
3 years ago
Read 2 more answers
State the place value(s) to which each decimal has been rounded.
Studentka2010 [4]

Answer:

Step-by-step explanation:

1. tens place

2. tenth

3. hundredth

4.  thousandth

5. hundred

6. thousand

7. tenth

8. hundredths

9. unit.

4 0
1 year ago
I need help plz thx
slamgirl [31]

Answer:

Perimeter = 36 units

Step-by-step explanation:

The figure given has been labelled with letters for easy reference.

Recall: when two tangents segments meet at a point outside the circle, the two segments that are tangent to the circle are congruent to each.

Perimeter = a + b + c + d + e + f

e = 4 (given)

e = f = 4 (tangents drawn from an external point)

b = 10 - f

Substitute

b = 10 - 4

b = 6

b = a = 6 (tangents drawn from an external point)

c = 8 (given)

c = d = 8 (tangents drawn from an external point)

Perimeter = 6 + 6 + 8 + 8 + 4 + 4

Perimeter = 36 units

5 0
2 years ago
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