The lateral surface area of a cone of radius r and height h (the surface area excluding the base) is
A=pir . Find dr/dh for a cone with lateral surface area of A = 4500picm2. Evaluate this
derivative when r = 60 cm and h = 45 cm. dr/dh= cm3
Solution
4500=rsqrt(r2+h2) 2025*10^4=r^4+r^2 h^2 0= 4r^3 dr/dh +2rh^2dr/dh+2r^2h
dr/dh=-rh/2r^2+h^2 =-45*60/2*3600+2025 =-0.292.
Basic Civil Engineering first year Notes- Chapter 4 Building.pptx
What is the difference between a defined-benefit and a defined-contr.pdf
1. What is the difference between a defined-benefit and a defined-contribution plan?
Are they both treated the same way for tax purposes?
What IRC sections reference these plans?
Which type of life insurance policies are taxable, and which are non-taxable?
What IRC sections reference whole life and term life, as well as key officer life insurance
policies?
Solution
Difference between a defined-benefit and a defined-contribution plan:
1. A defined benefit pension plan is a plan whichprovides a specified payment amount at the
tiem of retirement, whereas a defined contribution plan allows both employees and employers to
contribute and invest money over time to save for retirement.
2. 401(k) plan is defined contribution plan
Tax Treatement for defined-benefit and a defined-contribution plan
Contributions to defined-contribution plans are tax-deferred,that means neither the employer nor
the employee pays tax on the initial contributions or accumulating plan earnings. The employee
need to pay the tax at the time of withdrawl of funds.