Question

calcule a area total e o volume de um cubo cuja diagonal de uma face mede 1,2

Answer 1

x²+x² = 1,2²
2x² = 1,44
x² = 1,44/2
x² = 0,72
x² = 72/100
x = √(72/100)
x = √(2x36/100)
x = 6√2/10
x = 3√2/5
AF = (3√2/5)²
AF = 18/25
AT = 6 x 18/25
AT = 108/25