Answer:
24.9π
Step-by-step explanation:
Curcle Area=πR^2
A= πR^2 × 140°/360°
A= π×8^2 × 0.389 =~ 78.15
The formula is E= kQ/ d^2
k is 9x10^9
i changed 15 cm to 0.15 m
=> 9x10^9 x 12 OVER (0.15)^2
the answer is 4.8x10^12 N/C
but this is the electric field.
to find electric field STRENGTH, it’s E= F/q and you did not give a value for the force
Answer:
2461.8 in²
Step-by-step explanation:
Area of a circle = r²π
Using r=28 and π=3.14:
Area = 28²×3.14 ≈ 2461.8 in² rounded to the nearest tenth (ans)
