What is the formula for the area of a square?

$$A = s^2$$ where s is the length of a side.

How do you find the circumference of a circle with a diameter of 10 inches?

@@c = ext{π}d = ext{π} imes 10 ext{ in} \\ c ext{ is approximately } 31.4 ext{ in.}@

If the radius of a circle is 5 cm, what is its circumference?

@@c = 2 ext{π}r = 2 ext{π} imes 5 ext{ cm} \\ c ext{ is approximately } 31.4 ext{ cm.}@

What is the relationship between diameter and radius?

The diameter is twice the radius: $$d = 2r$$ .

What is the formula for the area of a trapezoid?

$$A = \frac{1}{2} (b_1 + b_2) h$$ where b_1 and b_2 are the lengths of the two bases and h is the height.

If a rectangle has a length of 8 m and a width of 3 m, what is its area?

$$A = l \times w = 8 \text{ m} \times 3 \text{ m} = 24 \text{ m}^2$$ .

Area, Perimeter, and Circumference Flashcards

Student preview

15 questions

Show all answers

1.

FLASHCARD QUESTION

Front

What is the length around a circle called?

Back

The circumference.

2.

FLASHCARD QUESTION

Front

What is the formula to find the circumference of a circle?

Back

Tags

CCSS.7.G.B.4

3.

FLASHCARD QUESTION

Front

What is the formula for the area of a circle?

Back

Tags

CCSS.7.G.B.4

4.

FLASHCARD QUESTION

Front

What is the formula for the perimeter of a rectangle?

Back

Tags

CCSS.3.MD.D.8

5.

FLASHCARD QUESTION

Front

What is the formula for the area of a rectangle?

Back

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

6.

FLASHCARD QUESTION

Front

What is the formula for the area of a triangle?

Back

Tags

CCSS.6.G.A.1

7.

FLASHCARD QUESTION

Front

What is the formula for the perimeter of a square?

Back

Tags

CCSS.4.MD.A.3

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