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cluponka [151]
3 years ago
14

Find the radius of a circle given that the circumference is 75.4 cm .

Mathematics
1 answer:
PIT_PIT [208]3 years ago
4 0
The circumference of a circle is given by:
C = 2 \pi r

We can solve for r:
r = \frac{C}{2 \pi }

Plug in given values:
r = \frac{75.4}{2 \pi }

Plug it into a calculator to get:
r = 12

So, your answer is: r = 12cm.
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Step-by-step explanation:

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Given: <br> PQ<br> ⊥<br> QR<br> , PR=20,<br> SR=11, QS=5<br> Find: The value of PS.
dlinn [17]

Answer:

The value of the side PS is 26 approx.

Step-by-step explanation:

In this question we have two right triangles. Triangle PQR and Triangle PQS.

Where S is some point on the line segment QR.

Given:

PR = 20

SR = 11

QS = 5

We know that QR = QS + SR

QR = 11 + 5

QR = 16

Now triangle PQR has one unknown side PQ which in its base.

Finding PQ:

Using Pythagoras theorem for the right angled triangle PQR.

PR² = PQ² + QR²

PQ = √(PR² - QR²)

PQ = √(20²+16²)

PQ = √656

PQ = 4√41

Now for right angled triangle PQS, PS is unknown which is actually the hypotenuse of the right angled triangle.

Finding PS:

Using Pythagoras theorem, we have:

PS² = PQ² + QS²

PS² = 656 + 25

PS² = 681

PS = 26.09

PS = 26

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3 years ago
NEED HELP FAST!!! picture is attached.
yuradex [85]
I think the answer could be C
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Nancy is a telemarketer who calls 96 people each day. How many people will she call in a 5-day workweek?
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