Penjelasan dengan langkah-langkah:
panjan (p)
= 14 + 21 + 14
= 49 cm
lebar (l)
l = 14 + 7 + 14
l = 35 cm
jari² lingkaran (r) = 14 cm
luas yg diarsir
= luas persegi panjang - 4 x luas 1/4 lingkaran
= (p x l) - 4(1/4)πr²
= (p x l) - πr²
= (49 x 35) - (22/7) x 14 x 14
= 1715 - (22 x 2 x 14)
= 1715 - 616
= 1099 cm²
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Penjelasan dengan langkah-langkah:
panjan (p)
= 14 + 21 + 14
= 49 cm
lebar (l)
l = 14 + 7 + 14
l = 35 cm
jari² lingkaran (r) = 14 cm
luas yg diarsir
= luas persegi panjang - 4 x luas 1/4 lingkaran
= (p x l) - 4(1/4)πr²
= (p x l) - πr²
= (49 x 35) - (22/7) x 14 x 14
= 1715 - (22 x 2 x 14)
= 1715 - 616
= 1099 cm²