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Find the area and the perimeter of the shaded regions below. Give your answer as a completely simplified exact value in terms of π (no approximations). 

 

 Jul 24, 2020
 #1
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Pretty straightforward....area:

area of SEMI-circle on the left =  1/2  pi (42)    cm2

triangles (two of them)  area  =   2  *   1/2 *  10 * 4      cm2  

       add them together

 Jul 24, 2020
edited by ElectricPavlov  Jul 24, 2020
 #2
avatar+26903 
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Perimeter of semi circle    1/2 pi * 8  cm

 

find hypotnuse of triangles   =   sqrt (10^2 + 4^2 ) = sqrt 116      there are two of them so   2 * sqrt 116    cm

 

Add the REDs .....      cm

 Jul 24, 2020

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