Penjelasan dengan langkah-langkah:
= diagonal 1 ÷ 2
= 24 ÷ 2
= 12 cm
__
= diagonal 2 ÷ 2
= 18 ÷ 2
= 9 cm
maka,
= √12² + 9²
= √144 + 81
= √225
= 15 cm
Keliling
K = 4s
K = 4 × 15
K = 60 cm (c)
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Penjelasan dengan langkah-langkah:
= diagonal 1 ÷ 2
= 24 ÷ 2
= 12 cm
__
= diagonal 2 ÷ 2
= 18 ÷ 2
= 9 cm
maka,
= √12² + 9²
= √144 + 81
= √225
= 15 cm
Keliling
K = 4s
K = 4 × 15
K = 60 cm (c)