Question

83 tolong dibantu ya. JAWABAN TERCERDAS MENANTI. PAKAI CARA YG BAIK YHX

Answer 1

1. L =½ (a+b) t
= ½ (4+20) 15
= ½ x 34 x 15
= 17 x 15
= 255 cm²

2. L = π x r²
2.826 = 3,14 x r²
r² = 2.826/3,14
r² = 900
r =√900
r = 30 cm