Area of Composite Figures

Which of the following formulae are correct?

• Area of a Rectangle = L x W

• Area of a Square = S x S

• Area of a Circle = π x r x r

• Area of a Circle = π x 2 x r

What are true about pi (π)?

• It is equal to 3.14

• It is equal to $\frac{22}{7}$ .

• It is equal to $\frac{circumference}{diameter}$ .

• It is equal to $\frac{diameter}{circumference}$ .

What is the area of a rectangle which is 28 m long and 9 m wide?

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2) No need to label.

The area of the square is 81 m2. What is the measure of the side?

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A square has a perimeter of 160 in. What is its area?

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3) No space in between digits.

The base of the triangle is 15 cm and the altitude is 10 cm. What is the area of the triangle?

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What is the area of the composite figure above?

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What is the area of the composite figure above?

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What is the area of the composite figure above?

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What is the area of the shaded region?

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