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Math Help - Question about circle?

  1. #1
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    Post Question about circle?

    a) In the left image, the length of the square is 10 cm. Please help me found the area and perimeter of the shaded part.

    b) In the right image, the length of the square is 14 cm. Please help me found the area and perimeter of the shaded part


    Thanks....
    Attached Thumbnails Attached Thumbnails Question about circle?-circle3.jpg  
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  2. #2
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    Quote Originally Posted by Deci View Post
    a) In the left image, the length of the square is 10 cm. Please help me found the area and perimeter of the shaded part.

    b) In the right image, the length of the square is 14 cm. Please help me found the area and perimeter of the shaded part


    Thanks....
    to a) The area in question is calculated by:

    (area of square) - (area of equilateral triangle) - 2 (sectors with the central angle of 30)
    Attached Thumbnails Attached Thumbnails Question about circle?-krssegment_inquadrt.png  
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