Jawaban:
a.
Penjelasan dengan langkah-langkah:
L = 1/2 × 32 cm × 42 cm
L = 32 cm × 21 cm
L = 672 cm [ ☑ ]
b.
L = 1/2 × 34 cm × 40 cm
L = 34 cm × 20 cm
L = 680 cm² [ ❌ ]
c.
L = 1/2 × 42 cm × 46 cm
L = 21 cm × 46 cm
L = 966 cm² [ ❌ ]
d.
L = 1/2 × 34 cm × 42 cm
L = 34 cm × 21 cm
L = 714 cm² [ ❌ ]
Jawaban dan langkah-langkah:
Luas A:
L = 1/2 × 32 × 42
= 16 × 42
= 672 cm² ✔️
Luas B:
L = 1/2 × 34 × 40
= 17 × 40
= 680 cm² ✖️
Luas C:
L = 1/2 × 42 × 46
= 21 × 46
= 966 cm² ✖️
Luas D:
L = 1/2 × 34 × 42
= 17 × 42
= 714 cm² ✖️
Jadi opsi yang tepat adalah A. 32 × 42
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Jawaban:
a.
Penjelasan dengan langkah-langkah:
a.
L = 1/2 × 32 cm × 42 cm
L = 32 cm × 21 cm
L = 672 cm [ ☑ ]
b.
L = 1/2 × 34 cm × 40 cm
L = 34 cm × 20 cm
L = 680 cm² [ ❌ ]
c.
L = 1/2 × 42 cm × 46 cm
L = 21 cm × 46 cm
L = 966 cm² [ ❌ ]
d.
L = 1/2 × 34 cm × 42 cm
L = 34 cm × 21 cm
L = 714 cm² [ ❌ ]
Jawaban dan langkah-langkah:
Luas A:
L = 1/2 × 32 × 42
= 16 × 42
= 672 cm² ✔️
Luas B:
L = 1/2 × 34 × 40
= 17 × 40
= 680 cm² ✖️
Luas C:
L = 1/2 × 42 × 46
= 21 × 46
= 966 cm² ✖️
Luas D:
L = 1/2 × 34 × 42
= 17 × 42
= 714 cm² ✖️
Jadi opsi yang tepat adalah A. 32 × 42