Jawabanmu

2014-09-10T20:08:12+07:00
L = π . r²
2.464 = \frac{22}{7} . r²
2.464 . 7 = 22 . r²
17248 = 22 . r²
17248
--------    = r²
22
784 = r²
28 = r
2014-09-10T20:23:20+07:00
L = π . r²
2.464 = . r²
2.464 . 7 = 22 . r²
17248 = 22 . r²
17248
--------    = r²
22
784 = r²
28 = r ..............klo slah maff