Respuesta :
A≈1.01cm²
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GermanHistoryICTIrishMathsMusicPhysical EducationReligious StudiesScienceSpanishWelsh 2nd LanguageAudioGamesFind us on Facebook KS3 BitesizeMore BitesizeBBC TeachersHome > Maths > Geometry and measures > CirclesPrint
Maths
Circles
Page:
1234BackNextSemi-circles and quarter circlesThe perimeter of a semi-circle can be found by using the equation π x r², which is commonly used to calculate the area of a whole circle:
area of a semi-circle: 1/2 x π x r2area of a quarter circle: 1/4 x π x r2perimeter of a semi-circle: π x r + 2 x rperimeter of a quarter circle: 1/2 x π x r + 2 x
1.01cm ^2 because you have to have the area and perimeter of the circle