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2 years ago

Jade bought a ring with a diameter of 20 millimeters. What is the circumference.

Mathematics

2 answers:

suter [353]2 years ago

7 0

Answer:

94.2

Step-by-step explanation:

circumference is d(pi)

20(3.14)= 94.2

tatuchka [14]2 years ago

5 0

Answer:

C≈62.83

Step-by-step explanation:

C=2πr=2·π·10≈62.83185

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2 years ago

Find the distance between (3,-3) and (2,7)

yarga [219]

Answer:

$\sqrt{101} = D$

Step-by-step explanation:

Method #1

We can draw a <em>right triangle</em> on the graph upon where the points are located and use the Pythagorean Theorem:

${a}^{2} + {b}^{2} = {c}^{2}$

${1}^{2} + {10}^{2} = {c}^{2}$

$1 + 100 = {c}^{2}$

$101 = {c}^{2}$

$\sqrt{101} = c$

* Whenever we talk about distance, we ONLY want the NON-NEGATIVE root.

_______________________________________________

Method #2

Or, we can use the Distance Formula:

$\sqrt{[-x_1 + x_2]^{2} + [-y_1 + y_2]^{2}} = D$

[2, 7] [3, −3]

$\sqrt{[-3 + 2]^{2} + [3 + 7]^{2}} = D$

$\sqrt{[-1]^{2} + 10^{2}} = D$

$\sqrt{1 + 100} = D$

$\sqrt{101} = D$

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2 years ago