tolong cari luasnya ya

=d1 x d2/2
=(7+7)x(28+7)/2
=14x35/2
=7x35
=245 cm
maaf kalau salah

L lingkaran = 22/7 x 14 x 14 = 616 cm²
L layang2 = 1/2 x 28 x 14 = 196 cm²
= 616 - 196 = 420 cm²