pakai cara kerja.. secepatnya pleass buat bsk

=3/4*phi r²
= 3/4*22/7*35²
=33/14*1225
=2887,5cm²

luas= phi×r²
=3/4×22/7×35×35
=3/4×110×35
=11.550÷4
=2.887,5 (b)
"semoga membantu"