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Mapel Math
Bab Kesebangunan

Diket :
■ Sisi bawah trapesium
= 20 cm + 8 cm + 8 cm
= 36 cm

Penyelesaian
17). Luas trapesium
= 1/2 × ( a + b ) × t
= 1/2 × ( 20 cm + 36 cm ) × 18 cm
= 56 cm × 9 cm
= 504 cm^2
Opsi C

18). Luas 3/4 lingkaran
= 3/4 × phi × r^2
= 3/4 × 22/7 × 35 cm × 35 cm
= 3/4 × 3850 cm
= 2887,5 cm^2
Opsi D

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