Asked by GGGGGGGGGGGG-Geometry
                I need help solving for the height of a trapezoid and finding the correct final answer for a semi circle (a half circle).In area form
Here's what I have so far:
Trapezoid Formula: 1/2(b1+b2)h
My Answer:1/2(5+15)=10
(My bases are 5 and 15)
I need help solving for the height now.
I went with 7 but my teacher said I was wrong and I don't know how to solve for the height. Can someone please help correct me and teach me how to properly solve for the height.
Circle Formula: A=pi*r^2 /2
My answer:(3.14*7.5^2/2=174.624=175
My teacher said my Formula is correct but my final answer I wrong. I kinda figured that but I need help checking and seeing where I went wrong and how to properly fix it.
So can someone please help me? I'm finding the Area in these problems.
            
            
        Here's what I have so far:
Trapezoid Formula: 1/2(b1+b2)h
My Answer:1/2(5+15)=10
(My bases are 5 and 15)
I need help solving for the height now.
I went with 7 but my teacher said I was wrong and I don't know how to solve for the height. Can someone please help correct me and teach me how to properly solve for the height.
Circle Formula: A=pi*r^2 /2
My answer:(3.14*7.5^2/2=174.624=175
My teacher said my Formula is correct but my final answer I wrong. I kinda figured that but I need help checking and seeing where I went wrong and how to properly fix it.
So can someone please help me? I'm finding the Area in these problems.
Answers
                    Answered by
            Steve
            
    If the area is 10, then
1/2(5+15)h = 10
1/2(20)h = 10
10h = 10
h = 1
If the radius is 7.5 (diameter=15) then
3.14*7.5^2/2
= 3.14*56.25/2
= 176.625/2
= 88.3125
    
1/2(5+15)h = 10
1/2(20)h = 10
10h = 10
h = 1
If the radius is 7.5 (diameter=15) then
3.14*7.5^2/2
= 3.14*56.25/2
= 176.625/2
= 88.3125
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