Answer:
Step-by-step explanation:
Hope this helps
Answer:
Area of a rectangle = 42 square units
Step-by-step explanation:
Area of a rectangle = length times width.
l = (2c + 1) when c = 3, the length = 2 · 3 + 1 ; l = 6 + 1 = 7
w = (3 + c) when c = 3, the width = 3 + 3; w = 6
Area of a rectangle = length times width
Area of a rectangle = 7 · 6
Area of a rectangle = 42 square units
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
