Angle R= 36°
180-68-76=36°
Hello!
I believe that 8 cubes are needed to build the given figure
I hope this helps!
119/30 or 3.96 or 3 29/30
Explanation:
First write all numerators above the least common denominator (in this case 30)
Then calculate the sum or difference
2/7=0.28571428571428571428571428571429
0.28571428571428571428571428571429*3=0.85714285714285714285714285714286
that is a long answer but it works