use the value 22/7 for / in this exercise (1) calculate the volume of a cylindrical steel bar which is 8cm long and 3.5cm in diameter .
pls help me i will submit it tomorrw
recall that v = π r^2 h
so just plug in your numbers
To calculate the volume of a cylindrical steel bar, we can use the formula:
Volume = π * r^2 * h
Given that the diameter is 3.5 cm, we can calculate the radius (r) by dividing the diameter by 2:
r = 3.5 cm / 2 = 1.75 cm
The length (h) of the bar is given as 8 cm.
Now, let's substitute the values into the formula:
Volume = 22/7 * (1.75 cm)^2 * 8 cm
To calculate this, we need to first square the radius:
(1.75 cm)^2 = 3.0625 cm^2
Now, substitute this value back into the formula:
Volume = 22/7 * 3.0625 cm^2 * 8 cm
Next, multiply the values:
Volume ≈ 22/7 * 3.0625 cm^2 * 8 cm
Volume ≈ 22 * 3.0625 * 8 / 7 cm^3
Volume ≈ 428 cm^3
Therefore, the volume of the cylindrical steel bar is approximately 428 cm^3.