Answer:
x=71
Step-by-step explanation:
38+x+x=180
x+x=142
2x=142
x=71
Answer:
Step-by-step explanation:
we know that
The area of the polygon is equal to the area of a square plus the area of four congruent triangles
so
![A=b^2+4[\frac{1}{2}(b)(h)]](https://tex.z-dn.net/?f=A%3Db%5E2%2B4%5B%5Cfrac%7B1%7D%7B2%7D%28b%29%28h%29%5D)
where
substitute
![A=8^2+4[\frac{1}{2}(8)(4)]](https://tex.z-dn.net/?f=A%3D8%5E2%2B4%5B%5Cfrac%7B1%7D%7B2%7D%288%29%284%29%5D)
We need to first find a common denominator. This means that we need the 12 and the 3 to be the same number. We can change the 1/3 into 4/12 and see that 9/12 is larger than 4/12.
Answer:
20 is correct answer
Step-by-step explanation:
8+3×4
=8+12
=20
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hope it helped you:)
thanks!
The formula for area of a circle = PI x r^2
since we know area, we can put that in the formula and solve for r ( which is the radius) diameter is radius x 2
826 = 3.14 x r^2
divide both sides by 3.14:
r^2 = 826 / 3.14
r^2 = 263.06
r = square root (263.06)
r = 16.22 cm
diameter = 16.22 * 2 = 32.44 cm
