Keliling lingkaran 44cm,maka luasnya=..........cm

d = 14
r = 7
luas = π.r²
= 22/7.7.7
= 156 cm²

k= 2πr
44=2×22/7×r
44×7=2×22×r
308=44r
308÷44=r
7=r
r=7
L= πr²
  = 22/7×7²
  =22/7×49
  =22×7
  154 cm