mohon bantu plis
pils
pils
Penjelasan dengan langkah-langkah:
no. 13
luas = panjang x lebaf
luas = √50 x √12 = √600
luas = √100 x √6
luas = 10 √6
jawaban : D
no. 14
K = 2P + 2L
K = 2(√32) + 2(√8)
K = (2 x √16 x √2) + (2 x √4 x √2)
K = (2 x 4 x √2) + (2 x 2 x √2)
K = 8√2 + 4√2
K = 12√2
jawaban : C
no. 15
3/√6 = (3/√6) x (√6/√6)
3/√6 = (3√6)/6
3/√6 = 1/2 √6
jawaban : A
no. 16
4/(√5 + 2)
= 4/(√5 + 2) x (√5 - 2)/(√5 - 2)
= 4(√5 - 2)/(5 - 4)
= 4(√5 - 2)/1
= 4(√5 - 2)
jawaban : A
17.
15/(√5 - √2)
= 15/(√5 - √2) x (√5 + √2)/(√5 + √2)
= 15(√5 + √2)/(5 - 2)
= 15(√5 + √2)/3
= 5(√5 + √2)
jawaban : D
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