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

The area is $$A = \pi \times 3^2 \approx 28.26 ft^2$$ .

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

The area is $$A = \frac{1}{2} \times (6 + 10) \times 4 = 32 m^2$$ .

If a circle has a diameter of 10 cm, what is its area?

The radius is 5 cm, so the area is $$A = \pi \times 5^2 \approx 78.54 cm^2$$ .

What is the area of a triangle with a base of 8 mm and a height of 3 mm?

The area is $$A = \frac{1}{2} \times 8 \times 3 = 12 mm^2$$ .

How do you calculate the area of a rectangle?

The area of a rectangle is calculated using the formula: $$A = length \times width$$ .

What is the area of a composite shape made of a rectangle (5 cm by 3 cm) and a triangle (base 3 cm, height 2 cm)?

Area of rectangle = 15 cm^2; Area of triangle = 3 cm^2; Total area = 15 + 3 = 18 cm^2.

If a trapezoid has an area of 30 m^2 and a height of 5 m, what is the average length of the bases?

Using the area formula, $$30 = \frac{1}{2} \times (base_1 + base_2) \times 5$$ , the average length of the bases is 12 m.

Area of Triangles, Trapezoids, Circles, and Composites Flashcards

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14 questions

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1.

FLASHCARD QUESTION

Front

What is the formula for the area of a triangle?

Back

2.

FLASHCARD QUESTION

Front

What is the formula for the area of a trapezoid?

Back

3.

FLASHCARD QUESTION

Front

What is the formula for the area of a circle?

Back

4.

FLASHCARD QUESTION

Front

How do you find the area of a composite shape?

Back

To find the area of a composite shape, divide it into simpler shapes, calculate the area of each, and then sum them up.

5.

FLASHCARD QUESTION

Front

Back

6.

FLASHCARD QUESTION

Front

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

Back

7.

FLASHCARD QUESTION

Front

If a trapezoid has bases of 8 m and 12 m, and a height of 5 m, what is its area?

Back

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