A solid has faces that consist of two squares and four congruent rectangles. What type of solid is it?
2 answers:
Answer:
The answer is rectangular prism.
Step-by-step explanation:
The rectangular prism is a solid (3-dimensional) object which has six faces that are rectangles in general. For this case, two face are squared, and these faces are opposite.
It has the same cross-section along a length, which makes it a prism.
I have attached an image that shows a rectangular prism and some formulas.
As we see, four rectangular faces are congruent and two rectangular faces (the opposites) are congruent.
The rectangular prism is also called "cuboid" or "rectangular solid".
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The $378.49 was earned on the investment if the principal amount of $3000 is invested for 3 years at 4% compounded semi-annually.
<h3>What is compound interest?</h3>It is defined as the interest on the principal value or deposit and the interest which is gained on the principal value in the previous year.
We can calculate the compound interest using the below formula:
Where A = Final amount
P = Principal amount
r = annual rate of interest
n = how many times interest is compounded per year
t = How long the money is deposited or borrowed (in years)
Here,
P = $3000
r = 4% = 0.04
n = 2
t = 3 years
After plugging all the values in the formula:
After solving:
A = $3,378.49
I = A - P = 3,378.49 - 3000 = $378.49
Thus, the $378.49 was earned on the investment if the principal amount of $3000 is invested for 3 years at 4% compounded semi-annually.
Learn more about the compound interest here:
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