Question 15
The figure consists of a circle of radius 5 cm and a right-angled isosceles triangle. Find the total area of the shaded regions, in square centimetres.
Use the incidences shown: the triangle’s right-angle vertex is the top of the circle, its altitude is the circle’s vertical diameter (10 cm), and its base is tangent at the bottom. The shaded parts lie in exactly one of the two shapes.
Use the incidences shown: the triangle’s right-angle vertex is the top of the circle, its altitude is the circle’s vertical diameter (10 cm), and its base is tangent at the bottom. The shaded parts lie in exactly one of the two shapes.