Answer:
0.1336
Explanation:
The formula for pressure is force exerted by the object divided by area the object covers.
The marking off table has a mass of 500 kg. You can find its weight by applying the equation;
w= m* g where w is weight , m is mass and g is acceleration due to gravity
w= 500 * 9.81
w= 4905 N
Formula for pressure is;
P= F/A
3.5 *100000 N = 4905 / A
350000 N = 4905 /A
A= 4905/350000
A= 0.0140 m²
To get the internal diameter apply the formula;
A=πr² where A is area of a cylindrical shaped object, r is radius
0.0140 = π * r²
0.0140/π = r²
0.0044608 = r²
√0.0044608 = r
0.06678 m = r ------D = 2r
0.1336 = D
