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Ksju [112]
4 years ago
6

How do you work out the length of radius and diameter of these two circles?

Mathematics
1 answer:
bogdanovich [222]4 years ago
8 0
So for the first one what you did was wrong as in wrong formula.
Radius is 5cm as it is given and diameter is double the radius which is 10.
So r=5
And D=10.

For the second one the diameter is 16cm as it is given and radius is half the diameter,so half of 16 is 8cm right?
So r=8
And D=16
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Answer:

54000

Step-by-step explanation:

use multiplication
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6 0
3 years ago
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Nadusha1986 [10]

Answer:

D

Step-by-step explanation:

Given a quadratic equation in standard form : ax² + bx + c = 0

We can solve for x using the quadratic formula

x² + 2x + 9 = 0 ← is in standard form

with a = 1, b = 2 and c = 9

x = ( - 2 ± \sqrt{2^2-(4(1)(9)}) / 2

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  = ( - 2 ± 4i\sqrt{2}) / 2

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5 0
3 years ago
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Alexxx [7]
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7 0
3 years ago
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Oksi-84 [34.3K]

Answer:

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Step-by-step explanation:

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B=18

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this is the area

HOPE IT HELPS !

6 0
3 years ago
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