Tolong kak cuma dua soal bsk dikumpulkan pake cara ya kak
Jawaban:
no. 4
Keliling lingkaran
[tex] = 2\pi \: r \\ = 2 \times \frac{22}{7} \times 21 \\ = 44 \times 3 \\ = 132 \: cm[/tex]
no. 5
Keliling 1/2 lingkaran
[tex] = (\frac{1}{2} \times \pi \: d ) + d\\ = ( \frac{1}{2} \times \frac{22}{7} \times 28) + 28 \\ = (11 \times 4 ) + 28\\ = 44 + 28 \\ = 72 \: cm[/tex]
[tex]\colorbox{FAFAD2}{\tt{\colorbox{EE82EE}{✿\:Riskafrebianti\:(RiBel)\:✿}}}[/tex]
[answer.2.content]
