Tolong ya kak plisss​

Jawab :

Luas seluruhnya = 257 cm²

Cara :

L1 = 1/2 × π × r²

= 1/2 × 3,14 × 10²

= 1/2 × 3,14 × 100

= 3,14 × 50

= 157 cm²

L2 = 1/2 × a × t

= 1/2 × 20 × 25

= 4 × 25

= 100 cm²

Luas seluruhnya =

= 157 + 100

= 257 cm²

Maaf Kalau Salah