Baca tanpa iklan
K = (4 x 14) + (2 × p × r)
K = 56 cm + (2 x 22/7 x 7)
K = 56 + 44 cm
K = 100 cm
Bangun 3
Luas = Luas Persegi panjang - luas setengah lingkaran
L = (p x l ) - (1/2 x p × r × r)
L = (20 x 10) - (1/2 x 22/7 x 7 x 7)
L = 200 - (1/2 x 314)
L = 200 - 157
L = 43 cm2
Keliling = Panjang Persegi Panjang + Keliling setengah lingkaran
K = 20 + (1/2 x 2 × p × r)
K = 20 + (1/2 x 62,8)
K = 20 + 31,4