Circle $C$ has radius 10 cm. How many square centimeters are in the area of the largest possible inscribed triangle having one side as a diameter of circle $C$?

A = 1/4(2r)^{2} cm²

Isoceles triangle base = 10 height would be 5

1/2 * 10 * 5 = ......... cm^{2}

the base is not 10; it's 20 So, area = 10^{2} cm^{2}

Base = 20

Height = 10

Area = 1/2 base * height = 1/2 * 20 * 10 = .........units ^{2}