solve the following problems. Show your complete solutions and answer on a piece of paper.
1. Manny painted a 4 sided figure inside a circle whose radius measures 30cm. Each side of 4 sided figure he painted measures 13cm. What is the figure that manny painted? What is the area of the circle that is not painted?
2. The figure below( in the pic) is composed of a rectangle and a half circle. Find the area of the figure. (figure is not drawn to scale)
3. Calculate the shaded region (in the pic above). Show only your solution and answer
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Answer:
Step-by-step exProblem 2:
diameter of semicircle = 9 - 3 - 2 = 4
radius = 4/2 = 2
Total Area = Area of semicircle + Area of rectangle
Total Area = πr²/2 + bh
Total Area = π(2²)/2 + 9(2)
Total Area = π(4)/2 + 18
Total Area = 2π + 18
Total Area = 6.28 + 18
Total Area = 24.28 cm²