Answer:
14
Explanation:
A=pi × r²
153.86 = 3.14 × r²
Divide both sides of the equation by 3.14
it becomes:
r²=153.86÷3.14
r²=49
taking the square root for both sides of the equation
r = 7
and
diameter = 2 × radius
diameter = 2 × 7 = 14
It’s B) Research database
0. dogs don’t go to hell, they go to heaven.
Answer:
A. If you hit the surface with enough photons, no matter their frequency, you can eventually get an electron to be ejected.
Explanation:
