Question

What would be the radius of a circle whose area is Y square units, and perimeter is Y units?

Answer 1

Answer:

Step-by-step explanation:

Sol. 2 Let the sides of triangle are 3x,4x and 5x units Here, (3x)2+(4x)2=(5x)2 ∴ It is a right angled triangle. Now, Area of triangle =12×3x×4x=6x2 ∴6x2=72 ⇒x2=726 ⇒x=12−−√=23–√ Perimeter of right angled triangle =3x+4x+5x =12x=12×23–√ =243–√ units ∴ Perimeter of equilateral triangle =243–√ units Its side =243√3=83–√ units Area =3√4×( side )2 =3√4×83–√×83–√ =483–√ sq units.

Answer 2

Answer:

2 units

Step-by-step explanation:

area of circle = πr^2

Y=πr^2----(1)

perimeter of circle=2πr

Y=2πr-----(2)

divide first equation by second

1 = r/2

r=2 units