Tentukan keliling dan luas lingkaran jika

1) K = 2πr
K = 2.22/7.14
K = 88 cm

L = π.r²
L= 22/7.14²
L = 22/7.196
L = 616 cm²

2) K = 2πr
K = 2.22/7.35
K = 220 cm

L = π.r²
L = 22/7.35²
L = 22/7.1225
L = 3.850 cm²

3) K = 2πr
K = 2.3,14.50
K= 314 cm

L = π.r²
L = 3,14.50²
L = 3,14.2500
L = 7.850 cm²

4) K = 2πr
K = 2.3,14.25
K = 157 cm

L = π.r²
L = 3,14.25²
L = 3,14.625
L= 1962,5 cm²

5) K = 2πr
K = 2.22/7.28
K= 176 cm

L = π.r²
L = 22/7.28²
L = 22/7.784
L = 2.464 cm²

6) K = π.d
K = 3,14.20
K= 62,8 cm

L = 1/4×π×d²
L = 1/4×3,14×20²
L = 1/4×3,14×400
L = 314 cm²

7) K = π.d
K = 22/7.28
K = 88 cm

L = 1/4×π×d²
L = 1/4×22/7×28²
L = 1/4×22/7×784
L = 616 cm²

8) K = π.d
K = 22/7.42
K = 132 cm

L= 1/4×π×d²
L = 1/4×22/7×42²
L = 1/4×22/7×1764
L = 1.386 cm²

9) K = π.d
K = 3,14.30
K = 94,2 cm

L = 1/4×π×d²
L = 1/4×3,14×30²
L = 1/4×3,14×900
L = 706,5 cm²

10) K = π.d
K = 3,14.40
K = 125,6 cm

L = 1/4×π×d²
L = 1/4×3,14×40²
L = 1/4×3,14×1600
L = 1.256 cm²

Smoga membantu :))