FahrianAl
Luas daerah 1 = 1/4 x πr² = 1/4 x 3.14 x 15 x 15 = 176,625 cm² luas daerah 3 = πr² = 3.14 x 12.5 x12.5 = 490,625 cm² luas daerah 4 = 1/4 x πr² = 1/4 x 3.14 x 18 x 18 = 254,34 cm² luas daerah 5 = 1/4 x πr² = 1/4 x 22/7 x 14 x 14 = 154 cm² luas daerah 6 = 1/4 x πr² = 1/4 x 3.14 x 19 x 19 = 283,385 cm² luas persegi panjang ABCD = p x l = p = 15 + 22 + 18 = 55 cm l = 28 = 55 x 28 = 1540cm² luas daerah 2 = Luas ABCD - Luas 1,3,4,5,6 =1540 - (176,625+490,625+254,34+154+283,385 ) =1540 - 1358,975 = 181,025 cm²
= 1/4 x 3.14 x 15 x 15
= 176,625 cm²
luas daerah 3 = πr²
= 3.14 x 12.5 x12.5
= 490,625 cm²
luas daerah 4 = 1/4 x πr²
= 1/4 x 3.14 x 18 x 18
= 254,34 cm²
luas daerah 5 = 1/4 x πr²
= 1/4 x 22/7 x 14 x 14
= 154 cm²
luas daerah 6 = 1/4 x πr²
= 1/4 x 3.14 x 19 x 19
= 283,385 cm²
luas persegi panjang ABCD = p x l
= p = 15 + 22 + 18 = 55 cm
l = 28
= 55 x 28 = 1540cm²
luas daerah 2 = Luas ABCD - Luas 1,3,4,5,6
=1540 - (176,625+490,625+254,34+154+283,385 )
=1540 - 1358,975
= 181,025 cm²