1. Three less than the square of a number can be
1 answer:
Answer:
D)
Step-by-step explanation:
As if a statement is given which says that :Three less than the square of a number.
This means if the number is 'x'
Suppose the statement is : the value of y is 3 less than the square of x then the equation will be
By using two such statement that gives two equation we can find the value of x and y by solving one equation and putting it in the other equation which will give the values of two variables .
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Answer:
Step-by-step explanation:
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.