Step-by-step explanation:
the volume is
base area × height
the base area is a circle, and the area of a circle is
pi×r²
in our case the volume is
pi×5²×22 = pi×25×22 = 550pi = 1,727.875959... cm³
the surface area is the sum of
2 circles (top and bottom) = 2× pi×5²
the lateral area
the lateral area (the "mantle wall" of the cylinder) you can imagine to be cut open and then placed flat on a table.
in this case you can see it is just a rectangle, with the cylinder height being the width, and the circle circumference being the length.
the circle circumference is
2×pi×r = 2×pi×5 = 10pi = 31.41592654... cm
so, the lateral area is
22 × 31.41592654... = 691.1503838... cm²
the surface area is then
691.1503838... + 2×pi×25 = 691.1503838... + 50pi =
= 848.2300165... cm²
Use the compound amount formula:
$2,300 = P(1+0.02)^3. Solve this for P:
P = $2,300 / (1.02)^3 = $2167.34.
By depositing $2,167.34 now, Cheryl would have $$2300 after three years.
Answer:
Step-by-step explanation:
Expression => | -2 |
Equation => 6 - 1 = 2 + 3
Inequality => 8^m > 64
Answer:
361 out of 400 is 90.25%
Step-by-step explanation:
