-72yexponet73 + 2xexponet2 :)
Answer:
Multiple of 3 :)
Step-by-step explanation:
Answer:
14
Step-by-step explanation:
= 1/4(56)
= 14
step by step
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
