Answer:
$1.129
Step-by-step explanation:
Answer:
half a sphere is called a hemisphere
The first step is to find the relationship between the square base and the surface area.
Surface area (SA) = area of the square (SS) + area of triangles.4(AT)
Thus we can conclude area of triangles 4(AT) = SA - SS = 864 - (18*18)
4(AT) = 864 - 324 = 540
Each triangle = 540/4 = 135 square in.
An area of one triangle (AT)= (base* slant height)/2
The base = 18 in.
<span>slant height = 2(AT)/base = 2(135)/18 = 15</span>
Answer: h= 8
Step-by-step explanation:
-3h - 6(5h/3 + 7/2) + 9h = -53 Distribute on the left
-3h - 10h - 21 + 9h = -53 combine like terms on the left side
-4h -21 = -53 Now add 21 to both sides
+21 +21
-4h = -32 Divide both sides by -4
h = 8
Answer:
<h2>1525.7 square meters, approximately.</h2>
Step-by-step explanation:
Notice that the radius is 28 meters, and the angle of the orange sector is 137°. However, the angle of the blue sector is:
360° - 137° = 223°
The area of a circular sector is
![A=\frac{\pi r^{2} \alpha}{360\°}](https://tex.z-dn.net/?f=A%3D%5Cfrac%7B%5Cpi%20r%5E%7B2%7D%20%20%5Calpha%7D%7B360%5C%C2%B0%7D)
Replacing given values, we have
![A=\frac{(3.14)(28)^{2} (223\°)}{360\° }=\frac{548972.48}{360} \approx 1525](https://tex.z-dn.net/?f=A%3D%5Cfrac%7B%283.14%29%2828%29%5E%7B2%7D%20%28223%5C%C2%B0%29%7D%7B360%5C%C2%B0%20%7D%3D%5Cfrac%7B548972.48%7D%7B360%7D%20%5Capprox%201525)
Therefore, the right answer is the second choice.