The sum of radii of two circles is 140 cm and the difference of their circumference is 88 cm. The diameters of the circles are |
|||||||
(a) |
77 cm, 63 cm |
(b) |
150 cm, 120 cm |
(c) |
154 cm, 126 cm |
(d) |
160 cm, 120 cm |
The sum of radii of two circles is 140 cm and the difference of their circumference is 88 cm. The diameters of the circles are |
|||||||
(a) |
77 cm, 63 cm |
(b) |
150 cm, 120 cm |
(c) |
154 cm, 126 cm |
(d) |
160 cm, 120 cm |
We have: …
And,
Solving we get
So, the diameters of the circles are 154 cm and 126 cm.