" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
a)πr²=10cm²/:π
r²=10cm²*1/π
r=√10/πcm≈1,78 cm
b)πr²=400m²
r²=400m²*1/π
r=20/√πm=20√π/πm
c)πr²=πkm²/:π
r=1 km
d)πr²=16πcm²/:π
r²=16cm²
r=4cm