Answer:
You can solve by the formula of area of trapezium. This is h(a+b)/2.
54 = 6(8+b)/2
Thus b = 10cm.
ANSWER
2393.9 mm³
EXPLANATION
The volume of a sphere of radius R is,

In this case, the radius of the sphere is 8.3 mm. Using π = 3.14, the volume is,

Hence, the volume of the sphere is 2393.9 cubic millimeters, rounded to the nearest tenth.
Answer:
A
Step-by-step explanation:
i did he test got it right