What is the coefficient of the term 67xy ? a.6/7 b.1/7 c.6xy d.6
1 answer:
A variable is an English letter we take for unknown values or quantities.We are given expression : .
In the above given expression we have x and y English letters, because we don't know the values of them.
And we have some constant in front of those English letters.
We have in front of xy.
<em>The coefficients are the constant numbers in front of variables.</em>
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Given:
A prism with height 5 cm and equilateral triangular base with side 2 cm.
To find:
The total surface area of the prism.
Solution:
Area of an equilateral triangle is:
Where, a is the side length.
Putting , we get
The base and top of the prism are congruent so their area must be equal.
The lateral surface area of the prism is:
Where, P is the perimeter of the base and h is the height of the prism.
The lateral surface area of the prism is:
Now, the total surface area is the sum of areas of bases and lateral surface area.
Therefore, the total surface area is 33.46 cm².