luas gabungan bangun datar berikut adalah...cm2

L 1/4 lingkaran
= 1/4 x phi r²
= 1/4 x 22/7 x 14²
= 1/4 x 22/7 x 14 x 14
= 1/4 x 22 x 2 x 14
= 1/4 x 44 x 14
= 11 x 14
= 154

L persegi
= s²
= 14²
= 14 x 14
= 196

L gabungan
= 154 + 196
= 350

L = L persegi + L 1/4 lingkaran
L = (s×s) + [1/4 × (π×r^2)]
L = (14×14) + [1/4 × (22/7 × 14^2)]
L = 196 + (1/4 × 616)
L = 196 + 154
L = 350 cm^2
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