9a - 3 (a - 6) = -6 a=___
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Let's see what to do buddy...
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Step (1)
We know that the sum of the interior angles of any n-sided figure is obtained from the following equation :
Our figure has 5 sides ;
So , sume the interior angles of it equals :
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Step (2)
First look at the photo which I post.
According it we have :
Subtract the sides of the equation minus 465 :
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And we're done.
Thanks for watching buddy good luck.
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The hardest part is finding the length of the curve at the top. To find arc length, multiply the circumference by the arc angle divided by full angle (360°) in a circle. Or:
x, the arc angle in a semicircle, is 180°.
r, the radius is 7/2 = 3.5.
Now just plug the numbers in and solve for arc length, s.
s = 2π(3.5)(1/2) ≈ 11.00
Now just add up all the sides. 11cm + 10cm + 10cm + 7cm = 38 cm.
x, the arc angle in a semicircle, is 180°.
r, the radius is 7/2 = 3.5.
Now just plug the numbers in and solve for arc length, s.
s = 2π(3.5)(1/2) ≈ 11.00
Now just add up all the sides. 11cm + 10cm + 10cm + 7cm = 38 cm.