TOLONG DONG NOMOR 4,6,7,8,9,10,11 BANTU SALAH SATU JG GPP PLZ

TOLONG DONG NOMOR 4,6,7,8,9,10,11 BANTU SALAH SATU JG GPP PLZ

$6. :rumus : luas = pi times r times r + pi times r times s \ r = frac{d}{2} = frac{18}{2} = 9 \ cari : s : dulu(pake : pytagoras) \ s = sqrt[2]{ {9}^{2} + {12}^{2} } = sqrt[2]{81 + 144} = sqrt[2]{225} = 15 \ luas = 3.14 times 9 times 9 + 3.14 times 9 times 15 \ = 254.34 + 423.9 = 678.24 {cm}^{3}$
$7. : luas : dua : bidang = luas : tabung : tanpa : tutup + luas : kerucut \ luas = (pi times r times r + 2pi times r times t) + (pi times r times r + pi times r times s) \cari : tinggi : kerucut = 14 - 10 = 4cm \ cari : s : nya : dulu \ s = sqrt[2]{ {3}^{2} + {4}^{2} } = sqrt[2]{9 + 16} = sqrt[2]{25} = 5 \ luas = (3.14 times 3 times 3 + 3.14 times 3 times 10) + (3.14 times 3 times 3 + 3.14 times 3 times 5) \ = 28.26 + 188.4 + 28.26 + 471 \ = 292.02 : {cm}^{3}$
$8. : 40 : orang : siswa : rata - rata : 160 : cm \ 18 : orang : laki - laki : 162.75 : cm \ 22 : orang : perempuan = ... \ rata : rata : perempuan = 40 times rata : rata : siswa - 18 times rata : rata : laki : laki \ = 40 times 160 - 18 times 162.75 \ = 6400 - 2929.5 = 3470.5$
$9. : median = frac{75 + 80}{2} = frac{155}{2} = 77.5$
$10. : rata - rata = frac{(60 times 1) + (65 times 2) + (70 times 2) + (75 times 3) + (80 times 5) + (85 times 5) + (90 times 7)}{25} = frac{2010}{25} = 80.4 \ yang : tidak : lulus : 13 : orang$
$11.360 - (80 + 75 + 95 + 60) = 360 - 310 = 50 \ frac{50}{360} times 540 = 75 : orang$
maaf kalo salah, semoga membantu