It's C and A since .2 times 30 is 6 and 1/5 is also .2
36/6 = 6
so
x = 42/6 = 7
answer
x = 7 cm
Answer:
B
Step-by-step explanation:
So using the formula for the volume of a cone:
r^2pi x h/3
The height is always 4 times the radius, so:
h=4r
Now putting the values into the original formula:
r^2pi x 4r/3
Now to see how much the radius increases per second:
r^2pi x 4r/3=300pi
r^2 x 4r/3=300
r^2 x 4r=900
r^2 x r=225
r^3=225
The radius increases by the cubic square root of 225 cm per second.
f(s)= 225^1/3 cm
16+24xy+9y2 that is what I got
