tolong dibantu gann..................

dik :panjang =(7√2+√3) 

lebar =(6√2-√3)

tinggi= √3

dit: Volume dan Luasprmukaan

jwb:

Volume = panjang x lebar x tinggi

Volume = (7√2+√3) x (6√2-√3) x √3

V = (7√2+√3) x (6√6 -3)

V = 42√12 -21√2 +6√18 -3√3

V = 42√(4x3) - 21√2 + 6√(9x2) - 3√3

V = 42x2√3 - 21√2 + 6x3√2 - 3√3

V = 84√3 - 2√2 + 18√2 - 3√3

V = 84√3-3√3 + 18√2 -2√2

V = (84-3)√3 + (18-2)√2

V = 81√3 + 16√2 cm^3

Luas permukaan: 2 ( (txl) + (pxl) + (pxt) )

Lp= 2 ( (√3 x (6√2-√3) ) + ((7√2+√3) x (6√2-√3)) + ((7√2+√3)x√3) )

Lp = 2 ( 6√6 - √9 + (42√4 -7√6 +6√6 -√9 ) + 7√6 + √9 )

Lp = 2 ( 6√6 - 3 + (42x2 +(-7+6)√6 - 3 ) + 7√6 + 3)

Lp = 2 ( 6√6 - 3 + 84 -√6 - 3 + 7√6 + 3)

Lp = 2 ( 6√6 -√6 + 7√6 - 3 + 84 -3 + 3)

Lp = 2 ( (6-1+7)√6 + 81)

Lp = 2 ( 12√6 + 81)

Lp = 24√6 + 81 cm^2