5dregensleyerjawaban nomer 1 luas = 1/2 lingkaran + segitiga = ( 1/2 x 22/7 x 21 x 21 ) + ( 1/2 x 42 x 16) = ( 11 x 3 x 21) + ( 21 x 16) = 693 + 336 = 1024 cm² jawaban nomer 2 luas = 1/12 lingkaran
jawaban nomer 3 luas = persegi + lingkaran = ( 100 x 100 ) + ( 22/7 x 70 x 70) = 10000 cm² + 15400 = 25400 cm²
jawaban nomer 4 volum = 1/2 x a x t x t = 1/2 x 18 x 10 x 45 = 9 x 10 x 45 = 4050 cm³
jawaban nomer 5 volum = π x r² x t = 22/7 x 12 x 12 x 70 = 22 x 144 x 10 = 31680 cm³
rumus volume Πr^2t
22/7 x 12^2 x 70
luas = 1/2 lingkaran + segitiga
= ( 1/2 x 22/7 x 21 x 21 ) + ( 1/2 x 42 x 16)
= ( 11 x 3 x 21) + ( 21 x 16)
= 693 + 336
= 1024 cm²
jawaban nomer 2
luas = 1/12 lingkaran
jawaban nomer 3
luas = persegi + lingkaran
= ( 100 x 100 ) + ( 22/7 x 70 x 70)
= 10000 cm² + 15400
= 25400 cm²
jawaban nomer 4
volum = 1/2 x a x t x t
= 1/2 x 18 x 10 x 45
= 9 x 10 x 45
= 4050 cm³
jawaban nomer 5
volum = π x r² x t
= 22/7 x 12 x 12 x 70
= 22 x 144 x 10
= 31680 cm³