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Bagian kiri atas = 1/4 lingkaran
= 1/4 πr²
= 1/4 * 22/7 * 7²
= 38,5 cm²
Bagian kanan bawah = bagian kiri atas
= 38, 5 cm²
Bagian kanan atas = 2 * (luas juring - luas segitiga)
= 2 * (90/360 * πr²) - (1/2 * a * t)
= 2 * (1/4 * 22/7 * 14²) - (1/2 * 14 * 14)
= 2 * (154 - 98)
= 2 * (56)
= 112 cm²
Bagian kiri bawah = bagian kanan atas
= 112 cm²
Luas = 38,5 + 38,5 + 112 + 112
= 301 cm²
==========
keliling :
bagian kiri atas :
1/4 keliling lingkaran + 2*setengah persegi
= (1/4 * 2πr) + 2(7)
= (1/4 * 2 * 22/7 * 7) + 14
= 11 + 14
= 25 cm
bagian kanan bawah = kiri atas
= 25 cm
bagian kanan atas :
2 * panjang busur juring
= 2 * (90 / 360 * 2πr)
= 2 * (1/4 * 2 * 22/7 * 14)
= 2 * 22
= 44 cm
bagian kiri bawah = kanan atas
= 44 cm
keliling : 25 + 25 + 44 + 44
= 138 cm