snusrat snusrat

24-10-2016
Mathematics

Answered

a piece of string 25cm long goes exactly once round the edge of a plate in the firm of a quadrant

Verified Answer :

HeavenlyHelper HeavenlyHelper

24-10-2016

well i assume it is a quarter of a plate so what is the area of a quarter circle?
whole circum.=2pir so a quarter = (2pir)/4=(pir)/2 =25(given)
so pir=50....so r=50/pi put this in the area formula pi(50/pi)^2=2500/pi =796

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