Solve.A lamp shade has the geometric form as shown. The total surface area of a lamp shade with a slant height s and top and bottom base radii of r2 and r1 is given by ?
+ ?
+ ?r1s + ?r2s. Find an equivalent expression for the total surface area by factoring out a common factor. 
A. ?(
+ 
+ sr1 + sr2)
B. ?*r1(r1 + 
/r1 + sr1 + sr2)
C. ?(r1 + r2)(r1 + r2 + s)
D. ?(r1 + r2)(r1 + r2 + sr1r2)
Answer: A
You might also like to view...
Write an English phrase that would translate into the given mathematical expression.6(x - 2)
A. Six more than the difference of a number x and 2 B. The difference of a number x and 2 C. Six times a number x decreased by 2 D. Six times the difference of a number x and 2
Solve the problem.A square plywood platform has a perimeter that is 6 times the length of a side, decreased by 6. Find the length of a side. (Recall the formula 
A. 5 B. 2 C. 1 D. 3
Find the present value of an investment at 5% annual simple interest which is worth $50,000 after 30 months. Round your answer to the nearest cent. ? $__________
What will be an ideal response?
Evaluate the expression.x ÷ 3, if x = 
A. 
B. 
C. 
D. 