Visually impaired students. The Journal of Visual Impairment & Blindness (May-June 1997) published a study of the lifestyles
1 answer:
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Answer:
a)
b)
Step-by-step explanation:
Given : A weight of 18,000 lb is supported on a rectangular base plate that is 9 in. wide and 2 ft long. The base plate rests on a concrete slab.
To find : Determine the stress that the base plate exerts on the concrete slab. Express your answer in units of (a) lb/in². and (b) lb/ft².
Solution :
a) A rectangular base plate that is 9 in. wide and 2 ft long.
Converting ft into inches,
1 feet = 12 inch
2 feet = 2×12= 24 inch
The area of the rectangular base is
The weight is W=18,000 lb.
The stress that the base plate exerts on the concrete slab is given by,
b) A rectangular base plate that is 9 in. wide and 2 ft long.
Converting inches into ft,
1 inch =
9 feet =
The area of the rectangular base is
The weight is W=18,000 lb.
The stress that the base plate exerts on the concrete slab is given by,
Answer:
The lateral surface area of the cylinder would be 420 π (pi)
If the value of π (pi) is taken as 3.14 the exact lateral surface area of the cylinder would be 1318.8
The total surface area of the cylinder would be 812 π (pi)
If the value of π (pi) is taken as 3.14 the exact total surface area of the cylinder would be 2549.68
Step-by-step explanation:
The formula for lateral surface area of a cylinder is :
= 2 * pi (π) * radius (r) * height (h)
In this question, the radius (r) is given as 14 units and the height (h) is given as 15 units.
Therefore, the lateral surface area would can be calculated as follows :
= 2 * π * r * h
= 2 * π * 14 * 15
= 2 * π * 210
= 420 π
If the value of π (pi) is taken as 3.14 the exact lateral surface area of the cylinder would be:
= 420 * 3.14
= 1318.8
Now, talking about the total surface area :
The formula for total surface area of a cylinder is :
= [2 * pi (π) * radius (r) * height (h)] + [2 * π * radius ]
In this question, the radius (r) is given as 14 units and the height (h) is given as 15 units.
Therefore, the total surface area of the cylinder can be calculated as follows :
= (2 * π * r * h) + (2 * π * )
= (2 * π * 14 * 15) + (2 * π * )
= (2 * π * 210) + (2 * π * 196)
= 420 π + 392 pi
= 812 π
If the value of π (pi) is taken as 3.14 the exact total surface area of the cylinder would be :
= 812* 3.14
= 2549.68