I don't see any answers provided so, i'm going to add, subtract, multiply, and divide with 6 and -6.
6 + -6 = 0 | Another solution: Any number multiplied by 0
6 - (-6) = 12 | Another Solution: 6 + 6
6 · -6 = -36 | Another Solution: -6 squared
6 / -6 = -1 | Another Solution: -1 x 1
Answer:
The weight of the three blades together is 
Step-by-step explanation:
step 1
Find the area of the circle
The area of the circle is equal to

we have

assume

substitute


step 2
Find the area of the 3 blades
we know that
The area of the 3 blades represent a central angle of 60 degrees, so
its a 1/6 of the area of complete circle

step 3
Find the weight of the three blades together to the nearest gram

Answer:
A. 11160 cubes B. 1395cm^3
Step-by-step explanation:
Volume= length x width x height
Its easiest to solve B. first and use it to solve A.
B. 7.5 x 12 x 15.5 = 1395cm^3 (volume of prism)
A. .5 x .5 x .5 = 1/8cm^3 (which is the volume of the cube)
1395 ÷ 1/8 = 11160