Tolong bantu jawab soal nomor 13!

L persegi=s×s
s=7×2=14 cm
=14×14
=196 cm2
L lingkaran=phi×r×r
=22/7×7×7
=154 cm2
L arsir=196-154
=42 cm2(D)

B1 L persegi = s x s
                     = 14 x 14
                     = 196

B2 L lingkaran = phi x r2
                        = 22/7 x 7 x 7
                        = 22 x 7
                        =154

L = B1 - B2
   = 196 - 154
   =42

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