How do you find the area of a rectangle with a length of 7 cm and a width of 3 cm?

To find the area, use the formula $$A = b \times h$$ . Here, $$A = 7 \times 3 = 21$$ square centimeters.

If a triangle has a base of 10 cm and a height of 5 cm, what is its area?

Using the formula $$A = \frac{1}{2} b h$$ , the area is $$A = \frac{1}{2} \times 10 \times 5 = 25$$ square centimeters.

What is the area of a rectangle with a length of 8 cm and a width of 4 cm?

Using the formula $$A = b \times h$$ , the area is $$A = 8 \times 4 = 32$$ square centimeters.

What is the area of a trapezoid with bases of 6 cm and 10 cm, and a height of 4 cm?

Using the formula $$A = \frac{1}{2} (b_1 + b_2) h$$ , the area is $$A = \frac{1}{2} (6 + 10) \times 4 = 32$$ square centimeters.

What is the area of a circle with a radius of 3 cm?

Using the formula $$A = \pi r^2$$ , the area is approximately $$A \approx 3.14 \times 3^2 \approx 28.26$$ square centimeters.

What is the area of a parallelogram with a base of 5 cm and a height of 3 cm?

Using the formula $$A = b \times h$$ , the area is $$A = 5 \times 3 = 15$$ square centimeters.

If a rectangular prism has a base area of 20 cm² and a height of 5 cm, what is its volume?

Using the formula $$V = B h$$ , the volume is $$V = 20 \times 5 = 100$$ cubic centimeters.

What is the height of a triangle if the area is 30 cm² and the base is 10 cm?

Using the formula $$A = \frac{1}{2} b h$$ , rearranging gives $$h = \frac{2A}{b} = \frac{2 \times 30}{10} = 6$$ cm.

Area of Polygons Review Flashcards

Student preview

15 questions

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1.

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

2.

FLASHCARD QUESTION

Front

What is the formula for the area of a triangle?

Back

Tags

CCSS.6.G.A.1

3.

FLASHCARD QUESTION

Front

What is the formula for the area of a parallelogram?

Back

Tags

CCSS.6.G.A.1

4.

FLASHCARD QUESTION

Front

What is the formula for the area of a trapezoid?

Back

Tags

CCSS.6.G.A.1

5.

FLASHCARD QUESTION

Front

What is the formula for the area of a circle?

Back

Tags

CCSS.7.G.B.4

6.

FLASHCARD QUESTION

Front

What is the formula for the volume of a rectangular prism?

Back

Tags

CCSS.7.G.B.6

7.

FLASHCARD QUESTION

Front

What is the height in a polygon?

Back

The height in a polygon is the perpendicular distance from the base to the top of the shape.

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