The sum of four times a number and eight is between zero and twelve
2 answers:
Answer:
Step-by-step explanation:
The sum of four times a number and eight is between zero and twelve
For example : x is between a and b can be written as a<x<b
Now we frame inequality for the given statement
Sum of four times a number and eight
LEt the unknown number be x
four times a number is 4x
Sum of 4x and 8 is
4x+8 lies between 0 and 12. So the inequality becomes
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Answer:
V ≈ 68.63 cm³
Step-by-step explanation:
the volume (V) of a sphere is calculated as
V = πr³
the volume of a hemisphere is half the volume of a sphere, so
V = ×
πr³ =
πr³ , then
V = π × 3.2³
= π × 32.768
≈ 68.63 cm³ ( to 2 dec. places )