Tolong dijawab ya pliss…tapi harus pake cara yaa !!​

L1 = 1906,5cm²

L2 = 4.112cm²

Penjelasan dengan langkah-langkah:

p = 0,4m × 100 = 40cm

l = d = 30cm

r = ½ × 30cm = 15cm

L = (p × l) + (πr²)

= (40 × 30)cm² + (3,14 × 15 × 15)cm²

= 1.200cm² + 706,5cm²

= 1.906,5cm²

s = d = 40cm

r = ½ × 40cm = 20cm

L = (s × s) + (2πr²)

= (40 × 40)cm² + (2 × 3,14 × 20 × 20)cm²

= 1.600cm² + 2.512cm²

= 4.112cm²