Answer:
<h2>3,600 m²</h2>
Step-by-step explanation:
The formula of a surface area of a sphere:
![SA=4\pi R^2](https://tex.z-dn.net/?f=SA%3D4%5Cpi%20R%5E2)
<em>R</em><em> - radius</em>
<em />
We have <em>R = 30m</em>.
Substitute:
![SA=4\pi(30^2)=4\pi(900)=3600\pi\ m^2](https://tex.z-dn.net/?f=SA%3D4%5Cpi%2830%5E2%29%3D4%5Cpi%28900%29%3D3600%5Cpi%5C%20m%5E2)
Answer:
12√2
Step-by-step explanation:
Use the Pythagorean Theorem here:
(12 cm)^2 + (12 cm)^2 = 288 cm^2.
The length of the hypotenuse is √288 = (√4)(√72) = 2(√36)(√2) = 12√2
To answer this item, note that what needs to be done is to substitute -4 to all x's in the equation. That is,
F(x) = 2^x
will become,
F(-4) = 2^(-4) = 1/16 or 0.0625