IM 7.3.9 Lesson: Applying Area of Circles

The area of this field is about 500,000 m².
What is the field’s area to the nearest square meter? Assume that the side lengths of the square are exactly 800 m.
Each square has a side length of 12 units.
Compare the areas of the shaded regions in the 3 figures. Which figure has the largest shaded region? Explain or show your reasoning.
Each square in Figures D and E has a side length of 1 unit. Compare the area of the two figures. Which figure has more area? How much more? Show your reasoning or explain below.
Compare the area of the two figures. Which figure has more area? How much more? Explain or show your reasoning.
Which figure has a longer perimeter, Figure D or Figure E? How much longer?
The field inside a running track is made up of a rectangle 84.39 m long and 73 m wide, together with a half-circle at each end. The running lanes are 9.76 m wide all the way around. Use this applet to answer the below question.
What is the area of the running track that goes around the field?[i] Explain [/i]your reasoning here.
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– GeoGebra Classroom Activities, IM 6 – 8 Math

Information: IM 7.3.9 Lesson: Applying Area of Circles