Answer:
<em>A= 1256</em>
Step-by-step explanation:
<u>The formula for area of a circle is </u>![A=\pi r^{2}](https://tex.z-dn.net/?f=A%3D%5Cpi%20r%5E%7B2%7D)
1. Diameter is DOUBLE of radius, so the diameter must be divided by 2. <em>40/2 = 20. </em>
<em>2. </em>Then, plug in the values into the area formula. <em>A= 3.14</em>![(20^{2})](https://tex.z-dn.net/?f=%2820%5E%7B2%7D%29)
3. Solve.<em> A= 1256</em>. (Remember that 20 squared is <em>20x20</em>)
The second base would be 17 feet.
To find the area of a trapezoid it is (base1 + base2) height
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2
Answer:
m,4+ a+b
Step-by-step explanation:
an exterior angle equals the sum of the 2 opposite interior angles
Your calculations are perfect!
Use order of operations or PEMDAS
this is order of simplification
work from left to right
Parentahsees (grouping symbols)
Exponents
multiplication or division
addition or subtraction
so
replace a with 1, b=2 and c with -8
![-2(3(1)-6)^2+5(-8) / 4*(-3)-(-2(2))^3](https://tex.z-dn.net/?f=-2%283%281%29-6%29%5E2%2B5%28-8%29%20%2F%204%2A%28-3%29-%28-2%282%29%29%5E3)
![-2(3-6)^2+5(-8) / 4*(-3))-(-2(2))^3](https://tex.z-dn.net/?f=-2%283-6%29%5E2%2B5%28-8%29%20%2F%204%2A%28-3%29%29-%28-2%282%29%29%5E3)
![-2(-3)^2+5(-8) / 4*(-3)-(-2(2))^3](https://tex.z-dn.net/?f=-2%28-3%29%5E2%2B5%28-8%29%20%2F%204%2A%28-3%29-%28-2%282%29%29%5E3)
![-2(-3)^2+5(-8) / 4*(-3)-(-4)^3](https://tex.z-dn.net/?f=-2%28-3%29%5E2%2B5%28-8%29%20%2F%204%2A%28-3%29-%28-4%29%5E3)
now exponents
![-2(9)+5(-8) / 4*-3)-(-4)^3](https://tex.z-dn.net/?f=-2%289%29%2B5%28-8%29%20%2F%204%2A-3%29-%28-4%29%5E3)
![-2(9)+5(-8) / 4*(-3)-(-64)](https://tex.z-dn.net/?f=-2%289%29%2B5%28-8%29%20%2F%204%2A%28-3%29-%28-64%29)
multiply and divide, working from left to right (remember, division is multiplication by a fraction)
![-18+5(-8) / 4*(-3)-(-64)](https://tex.z-dn.net/?f=-18%2B5%28-8%29%20%2F%204%2A%28-3%29-%28-64%29)
![-18-40 / 4*(-3)-(-64)](https://tex.z-dn.net/?f=-18-40%20%2F%204%2A%28-3%29-%28-64%29)
![-18-10*(-3)-(-64)](https://tex.z-dn.net/?f=-18-10%2A%28-3%29-%28-64%29)
![-18+30-(-64)](https://tex.z-dn.net/?f=-18%2B30-%28-64%29)
![-18+30-1(-64)](https://tex.z-dn.net/?f=-18%2B30-1%28-64%29)
![-18+30+64](https://tex.z-dn.net/?f=-18%2B30%2B64)
addition and subtraction
![12+64](https://tex.z-dn.net/?f=12%2B64)