How do you find the leftover area after cutting circles from a square?

Subtract the total area of the circles from the area of the square: $$\text{Leftover Area} = \text{Area of Square} - \text{Total Area of Circles}$$ .

What is the area of four circles with a radius of 1 foot each?

The total area of four circles is: $$4 \times (3.14 \times (1)^2) = 12.56 \text{ square feet}$$ .

If a square has an area of 16 square feet, what is the length of one side?

The length of one side is: $$s = \text{√}(16) = 4 \text{ feet}$$ .

What is the area of leftover poster board if 12.56 square feet are cut from a 16 square feet square?

The leftover area is: $$16 - 12.56 = 3.44 \text{ square feet}$$ .

What is the formula for the area of a rectangle?

The area of a rectangle is calculated using the formula: $$A = l \times w$$ , where l is the length and w is the width.

How do you convert the area from square meters to square feet?

To convert square meters to square feet, multiply by 10.764: $$\text{Area in ft}^2 = \text{Area in m}^2 \times 10.764$$ .

What is the significance of π (pi) in geometry?

π (pi) is a constant approximately equal to 3.14, used to calculate the circumference and area of circles.

Lesson 21 Flashcard-7th Grade Flashcards

Student preview

14 questions

Show all answers

1.

FLASHCARD QUESTION

Front

What is the formula for the area of a circle?

Back

Tags

CCSS.7.G.B.4

2.

FLASHCARD QUESTION

Front

How do you find the area of a square?

Back

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

3.

FLASHCARD QUESTION

Front

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

Back

4.

FLASHCARD QUESTION

Front

How do you calculate the area of a semicircle?

Back

Tags

CCSS.7.G.B.4

5.

FLASHCARD QUESTION

Front

What is the total area of two semicircles with a radius of 15.25 meters?

Back

Tags

CCSS.7.G.B.4

6.

FLASHCARD QUESTION

Front

If a square has a side length of 4 feet, what is its area?

Back

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

7.

FLASHCARD QUESTION

Front

What is the area of one circle with a radius of 1 foot?

Back

Tags

CCSS.7.G.B.4

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