Arc Length and Sector Area

Arc Length and Sector Area

Assessment

Flashcard

Mathematics

9th - 10th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What is the formula for arc length in a circle?

Back

Arc Length = (θ/360) * 2πr, where θ is the angle in degrees and r is the radius.

2.

FLASHCARD QUESTION

Front

How do you calculate the area of a sector in a circle?

Back

Area of Sector = (θ/360) * πr², where θ is the angle in degrees and r is the radius.

3.

FLASHCARD QUESTION

Front

What is the relationship between the diameter and radius of a circle?

Back

The radius is half of the diameter. r = d/2.

4.

FLASHCARD QUESTION

Front

If a circle has a radius of 10 inches, what is its circumference?

Back

Circumference = 2πr = 2π(10) = 20π inches.

5.

FLASHCARD QUESTION

Front

What is the measure of a full circle in degrees?

Back

A full circle measures 360 degrees.

6.

FLASHCARD QUESTION

Front

How many degrees are in a right angle?

Back

A right angle measures 90 degrees.

7.

FLASHCARD QUESTION

Front

What is the formula to find the radius if the area of a sector is known?

Back

Radius can be found using r = √(Area * (360/πθ)).

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