336 centimeters
If it only has those 3 sides then it must be a triangle. As all its sides are different lengths it's a scalene triangle.
Area = 1/2*(14+12)*8 = 104 square cm
8 will go into 14 once with a remainder of 6 (or 1 3/4 times)
Area = Base * vertical height = 8*14 = 112 cm2
115
115 ÷ 8 = 14 with remainder 3 or 14⅜ = 14.375 times.
376.8 cubic centimeters15 cm * 8 cm * 3.14 cm = 376.8 cubic cm.
2 x (8 + 3) ie 22cm
3 times with 8 left over. (ie 3 8 /14 or more correctlly 3 4 /7 )50/14= 3.5714286 it can only fit into 50 3 times without going over 50. 14 x 3 = 42, and since there is a remainder of 8 ( 50 - 8 = 42), then the .5714286 would roughly equate to an 8
The answer is 28 cm.
Surely you mean "8 x 1 3/4," which is 14. 8 times 1 and 3 quarters might be construed as 8 x 1 + 3/4...
It is: 1/3*64*3 = 63 cubic cm