Is this even mathematics?
The surface area of a cylinder is given as

r (radius)= 0.75 since radius is half of the diameter
h (height) = 10
So:
Answer:
3.14 x 16 = 50,24unit
Step-by-step explanation:
The circumference = π x the diameter of the circle (Pi multiplied by d.
Simply divide the circumference by the π, then you will have the diameter of the circle.
<em>Answer</em><em>:</em>
the surface area of the rectangular pyramid below is 300 units2
9514 1404 393
Answer:
$67,200
Step-by-step explanation:
The amount if interest is given by the formula ...
I = Prt
where P is the amount invested, r is the annual rate, and t is the number of years. Here, we want to find P when r = 0.05 and t = 1/2 such that I = 1680.
P = I/(rt) = $1680/(0.05·0.5) = $1680/0.025
P = $67,200
The amount invested was $67,200.