pi r^2 < 1
r^2 < 1/π
r < 1/√π dm
The area of a circle is less than 1 dm². Find the radius of the circle.
3 answers
1/sqrt Pi
√π/π
The formula for Area of a Circle is:
A = pi x r^2
we know that the area of the circle HAS TO BE LESS than 1 dm, so we can plug into the formula:
1 < pi x r^2
From this we get r<-√π/π (which we can disregard), and r<√π/π
The formula for Area of a Circle is:
A = pi x r^2
we know that the area of the circle HAS TO BE LESS than 1 dm, so we can plug into the formula:
1 < pi x r^2
From this we get r<-√π/π (which we can disregard), and r<√π/π
3 answers