Answer:
Step-by-step explanation:
Sn = a + (n-1)d
Sn = 3 + (10-1)*d
Sn = 3 + 9d
3 + 9d = Sn
9d = Sn - 3
d = (Sn - 3)/9
d = (sn - 3)/9
800
9.28 is answer of cube 800
3x + 4x +5x = 54 (because the perimeter = sum of its dies)
12x = 54
x = 4.5
So the 3 sides are 3*4.5 , 4*4.5 and 5*4.5
= 13.5, 18 and 22.5 units (answer)
