Question

Calcule a área das partes coloridas, em cm2

Answer 1

area sera: (PIR²)/2-(pir²)/2-pis² sendo R=5, r=2,5  e s= 1,25 dai ficará:
AREA=PIR²
AREA=pi5²/2
AREA=25/2
AREA=12,5
area= pir²/2
area = pi2,5²
area= 6,25/2
area= 3,125picm²
areas=pis²
areas=1,25²pi
areas=1,562picm²
dai a area rachurada ficara=AR
AR= 12,5-3,12-1,56
AR= 7,82picm²
AR=24,56cm²