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3 years ago

What is the sum of the areas of circle C and circle D?

Mathematics

2 answers:

meriva3 years ago

5 0

The answer is 98pi units^2 on e2020

Morgarella [4.7K]3 years ago

4 0

Assuming that the center of each circle is at point C and D, then both have a radius of 7cm. We know that the formula for solving area of the circle is A=pi*r².
Then we solve area of once circle multiplied by two to get the total area of the given circles. The solution is shown below:
C1 area=3.1416*7²
C1 area=153.9384 cm²
Summation of the area of circle C and D is shown below:
Sum area=2*153.9384
Sum area=307.8768cm²

The answer is 98pi.

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Write the radical below in the simplest radical form √210 Pls show ur work

Anna [14]

Answer:

$\sqrt{210}$

Step-by-step explanation:

Let's look at the prime factors of 210.

210 = 2 * 3 * 5 * 7

$\sqrt{210} = \sqrt{2 \times 3 \times 5 \times 7} = \sqrt{210}$

Since no factor appears more than once, this radical cannot be simplified.

3 0

3 years ago

How many two thirds are in 42?

noname [10]

28, by the way you could’ve just used a calculator

7 0

3 years ago

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In the figure, angle D measures 45° and angle E measures 87°. What is the measurement of angle H? 42°

Vinvika [58]

The complete question is shown in the attached image

Answer:
measure angle H = 42°

Explanation:
There is a theorem that states that:
"In a triangle, the measure of the exterior angle is equal to the sum of the measures of the two non-adjacent angles to the exterior angle"

In the given, we have:
angle E is an exterior angle to triangle DFH
The two non-adjacent angles to angle E are angles D and H

Based on the above rule:
measure angle E = measure angle D + measure angle H

We are given that:
angle E = 87°
angle D = 45°

Substitute with the givens in the above rule and solve for the measure of angle H as follows:
angle E = angle D + angle H
87° = 45° + measure angle H
measure angle H = 87° - 45°
measure angle H = 42°

Hope this helps :)

3 0

3 years ago

The blue segment below is a diameter of O. What is the length of the radius of the circle?

nexus9112 [7]

Answer: Option D :3.85 units.

Step-by-step explanation: Diameter is the longest chord of any circle . It is a straight line passing through the center of the circle and touches the circle at two points. Radius is a line drawn from the center of circle to the circumference. Radius is half of diameter.In the given figure the blue line is diameter .The diameter is the blue line which equals 7.7 units.Radius is half of diameter .Radius = 7.7÷2=3.85 units.

Option D is the right answer.

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4 years ago

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ZanzabumX [31]

Answer:

noicr

Step-by-step explanation:

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3 years ago