Find the area in the first quadrant bounded by the arc of the circle described by the polar equation r = 2 sin θ + 4 cos θ. The
circle is graphed in the accompanying figure. A. 5π/2 + 4 B. 5 π C. 5 π + 8 D. 5π/2
1 answer:
The radius of the circle is sqrt(5)
so the A = pi*r*r = pi * sqrt(5) * sqrt(5) = 5pi
the answer os <span>B. 5 π </span>
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volume of a sphere = 4/3 *pi * r^3
3/4 * pi = 4/3 *pi * r^3
divide each side by pi
3/4 = 4/3 * r^3
multiply each side by 3/4
3/4 * 3/4 = r^3
9/16 = r^3
take the cube root of each side
r = (9/16) ^ (1/3)
37 would be the answer.....
answer is
(Y)=-23,-14, -5,4,13
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Answer:
B
Step-by-step explanation:
233/285*100
0.81754*100
81.754%
It takes 7 hours to mow 4 lawns
Therefore every hour, (4 ÷ 7) or 4/7 lawns are mowed. This gives the rate.
For 35 hours, 4/7 x 35 lawns are mowed.
=35 ÷ 7 = 5
= 4 × 5
= 20 lawns
