+0  
 
+1
40
5
avatar+31 

The semicircle below has diameter 20. Find the area of the blue region.

 Mar 8, 2020
 #1
avatar+21725 
+2

Area of a circle = pi r^2

area of the semi circle = 1/2 pi r^2

area of the triangle to subtract from the semi circle area = 1/2  b h =  1/2  12  16

 

 

1/2 pi 10^2   -    1/2 *12 *16 = blue area

 Mar 8, 2020
 #2
avatar+31 
+1

what would it equal if you subtract those

ss333  Mar 8, 2020
 #3
avatar+21725 
0

Well....YOU do the math and tell me.....I try not to give answers only.....you can do it very easily.....cheeky

ElectricPavlov  Mar 8, 2020
 #4
avatar+31 
+1

would it be 50pi - 96

ss333  Mar 8, 2020
 #5
avatar+21725 
+1

yeppers....      pi = 3.14159    if you want to simplify it further...  and the answer would be in   units2    since it is area

ElectricPavlov  Mar 8, 2020
edited by ElectricPavlov  Mar 8, 2020

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