mathmeme

Okay so for these two questions you need to know the formula of the circumference and area of circle before attempting the question.

Circumference of Circle = 2*pi*r (where 'r' is the radius of the circle)

Area of Circle = pi*r^2 (pr*r*r, where 'r' again is the radius of the circle).

So with regards to your question now:

Circumference = 2*pi*4 = 8*pi = 25.1327 = 25.1m (rounded to the nearest tenth) (Don't forget the unit of measure 'meters' in this case)

Area = pi*(4)^2 = 16*pi = 50.2655 = 50.3 m^2 (rounded to the nearest tenth)

Thank you for showing me the graph!

Thank you so much Melody! You're always so helpful :)

The number π is a mathematical constant, the ratio of a circle's circumference to its diameter, commonly approximated as 3.14159.

First expand the equation:

5*(1+6x) - 4x = 125

5 + 30x - 4x = 125

26x = 120

x = 60/13

A good way to think about is 100% of 50 can be mathematically represented as 1 x 50 = 50.

If we want 80% of 50, we can just do 0.8 x 50 = 40.

Remember 1.0 = 100%, so 0.8 = 80%

So the surface area of a cylinder is given by:

 A = (2*pi*r*h + 2*pi*r^2)

Therefore half the surface area is just:

A = 0.5*(2*pi*r*h + 2*pi*r^2)

Generally we would assume 1.0 = 100%. In that case, 0.863 can be represented as 0.863 x 100 = 86.3%. Hope that helps :)

You legend!

No, last time was a continuous fraction. unless the process of solving this integral is the same as the continuous fraction integral