Area.

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Presentation transcript:

Area

Area of a Circle The area A of a circle equals the product of π and the square of its radius r. Find the area of the circle. Round your answer to the nearest hundredth. 2 in. The area of the circle is 12.57 in².

Area of a parallelogram To find the area of a parallelogram, you multiply the shape’s base and height. A = b(h) Find the area of the following shape. A = (10)(7) A = 70 cm² 7 cm 10 cm

Area of a Triangle If you take a parallelogram and split it in half, you create two triangles. For the area formula of a triangle, take the formula for the area of a parallelogram and split it in half. A = (b(h))÷2 A = (3.7(2.4)) ÷2 A = (8.88) ÷2 A = 4.44 cm²

Area of a Trapezoid A trapezoid is a quadrilateral with only one pair of parallel sides. A=½4(6+3) A=½4(9) A=18m²

Practice Problems – Find the area of the following shapes. 1. 2. 3. 4. 15 mm. 6 in. 6 in. 12 mm. 29 ft. 21 ft. 33 cm. 19 ft.