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prisoha [69]
3 years ago
6

BRAINLIEST ANSWER TO ANYONE WHO HELPS ME FIND QUESTIONS 1,2 AND 3

Mathematics
1 answer:
Vladimir [108]3 years ago
6 0
1. a)CK²=CH²+HK²,  CH - radius
CH²=CK²-HK²=50²-30²=2500-900=1600 ft²
CH=40 ft  -- radius
b) cos(KCH)= CH/CK=40/50=4/5
KCH=arccos(4/5)≈36.87°
2)C=2πr≈2*3.14*40=251.2 ft
C=2*40π=80π ft --- exact
3) A =πr²=40²π=1600π ----exact
A≈1600*3.14=5024 ft
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