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3 years ago

How do you find the diameter of a circle with the circumference?

1 answer:

meriva3 years ago

8 0

Hello :
the circumference of a circle is P : P = 2π×r r : ridus
 P = 2π×r = π× L because : 2r = L
you can find the diameter L : L = P/π

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Evaluate the expression 2b^3+5 (BTW I did the first part it's 3 but I need the second part)

andrey2020 [161]

To find the exact answer based on the last step, " $2(3)^3+5$ ", you must use PEMDAS (attached image below)

$2(3)^3+5=2*27+5=54+5=59$

Thus the answer is 59.

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2 years ago

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Anna71 [15]

Answer:

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Step-by-step explanation:

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3 years ago

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steposvetlana [31]

Answer:

height = 7 cm

Step-by-step explanation:

The area (A) of a trapezium is calculated using the formula

A = $\frac{1}{2}$ h(a + b)

where h is the height and a, b the parallel bases

here a = 6, b = 12 and A = 63, hence

$\frac{1}{2}$ × h × (6 + 12) = 63

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3 years ago

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2/3 / (-9/4) 2/3 divided by (-9/4)

Bezzdna [24]

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$\frac{2}{3} \div ( - \frac{9}{4} ) = \\$

$\frac{2}{3} \times( - \frac{4}{9}) = \\$

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2 years ago