area = πr² = 154 r² = 154/π = 49 r = 7 cm

Area of circle = pie * r^2 154 = 22/7 * r^2 r^2 = (154*7)/22 r^2 = 7 * 7 r = 7

Radius of circle is 7 cm

Construct a circle of radius 1. From a point on the circle, construct another circle of radius 1. Inscribe a square where the two circles overlap. What is the area of the square?

A circle has a radius of 12 units and its center is at one vertex of a square. The square has a side of 12 units. Find the area of the shaded region?

A circle contains two tangent semicircles whose diameters are parallel chords. If the circle has an area equal to 1, what is the combined area of the two semicircles?

In a circle of radius 1, an equilateral triangle is inscribed in the circle as shown. What is the area of the blue region?