Jawaban:
semoga membantu kak, tolong jadikan jawaban tercerdas ya☺️❤️
note: sory cuma 18&20
Penjelasan dengan langkah-langkah:
18). ³√216 = p dan ³√125 = q
= √(4p² + q²)
= √4(³√216)² + (³√125)²
= √4(216^⅔) + (125^⅔)
= √4(6³)^⅔ + (5³)^⅔
= √4(6²) + 5²
= √4(36) + 25
= √(144+25)
= √169
= 13 (C)
.
19). (³√16)^3/2 = (16)^⅓)^3/2 = (16)^(³/6) = (16)^½ = √16 = 4 (A)
20). Luas permukaan kubus:
L = 6 x r²
L = 6 x (3³√2)²
L = 6 x (3³√2) x (3³√2)
L = 6 x (3x3) . ³√(2 x 2)
L = 6 x 9 . ³√4
L = 54³√4
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Jawaban:
semoga membantu kak, tolong jadikan jawaban tercerdas ya☺️❤️
note: sory cuma 18&20
Penjelasan dengan langkah-langkah:
18). ³√216 = p dan ³√125 = q
= √(4p² + q²)
= √4(³√216)² + (³√125)²
= √4(216^⅔) + (125^⅔)
= √4(6³)^⅔ + (5³)^⅔
= √4(6²) + 5²
= √4(36) + 25
= √(144+25)
= √169
= 13 (C)
.
19). (³√16)^3/2 = (16)^⅓)^3/2 = (16)^(³/6) = (16)^½ = √16 = 4 (A)
.
20). Luas permukaan kubus:
L = 6 x r²
L = 6 x (3³√2)²
L = 6 x (3³√2) x (3³√2)
L = 6 x (3x3) . ³√(2 x 2)
L = 6 x 9 . ³√4
L = 54³√4