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3 years ago

HELPP PLEASE ASAP!

Mathematics

1 answer:

drek231 [11]3 years ago

4 0

Answer:

B) 12.25πm²

Step-by-step explanation:

The formula for the circumference of a circle is

C = 2πr

The circumference of your circle is

C = 7πm

If we factor out a 2 from the 7, we get

C = (2 × 3.5)πm = 2π(3.5m)

Now, if we compare the two formulas, we see that

r = 3.5m

The formula for the area of a circle is

A = πr²

If r = 3.5m, then the area of your circle is

A = π(3.5m)² = 12.25πm²

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2 years ago

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3 years ago

Type the correct answer in each box.

IgorLugansk [536]

Answer:

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Step-by-step explanation:

To find ∠DEB:

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To find ∠BCD:

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To find ∠EAB:

We know that m∠ABC is 133° and ∠DEA is 114°. However, both angles count both the triangle and trapezoid. Previously we figured out that ∠DEB is 70°. We'll take the angle of ∠DEA and subtract the angle of ∠DEB from it, which gets us 44°. To figure out the angle of ∠B, we take the angle of ∠ABC and subtract 70° or the angle of ∠DEB, which gets us 63°. Now we take the total degree of a triangle, 180° and minus both 44° and 63° from it, which is 73°.

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2 years ago

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2 years ago