The sum of the radii of two circles is 12 cm. The diameter of one circle is 10 cm. What is the area of the other circle?
12-10 △ 2 = 7 (CM), 3.14 × 72, = 3.14 × 49, = 153.86 (cm 2); answer: the area of the other circle is 153.86 cm 2
12-10 △ 2 = 7 (CM), 3.14 × 72, = 3.14 × 49, = 153.86 (cm 2); answer: the area of the other circle is 153.86 cm 2