Perimeter and Area of rectangles, parallelograms and triangles

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Presentation transcript:

Perimeter and Area of rectangles, parallelograms and triangles

Area of rectangles and parallelograms A = b x h (l x w) height (h) base (b) height (h) height (h) base (b)

What is the area of the rectangle? 8m 6m 6m 8m a. 48m b. 64m c. 36m d. 28m

What is the area of the parallelogram? a. 60 m b. 300m c. 50m

Area of the triangle http://www.mathplayground.com/howto_area_triangle.html A =

What is the area of the triangle? 10cm 5cm 4cm 12cm a. 48cm b. 60cm c. 30cm d.24cm

What is the area of the shaded region? Take the middle OUT (subtract) of the big rectangle 20m 10m 3m 8m 200 – 24 = 176 m2

PeRIMeter – distance around the outside 2 ft. 3 ft. 5 ft. What is the perimeter of the parallelogram? a. 8 ft. b. 10ft. c. 16 ft. d. 12 ft.

PeRIMeter – distance around the outside 3 ft. 2 ft. 5 ft. What is the perimeter of the parallelogram? a. 8 ft. b. 11ft. c. 9 ft. d. 10 ft.