How many parallel faces are shown
2 answers:
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Answer:
Base of the mirror is 12 feet and height of the mirror is 18 feet.
Step-by-step explanation:
Given:
Area of the triangular mirror = 108 sq ft.
Let base (b) of the mirror be x.
Now given:
height is 6 feet less than twice the base of the mirror
So we can say that;
Height (h) =
We need to find the base and height of the mirror.
Solution:
Now we know that mirror is in triangular shape so we will apply area of triangle formula to find base and height.
Now Area of triangle is half times base times height.
framing in equation form we get;
Now we will find the roots of x by factorizing the equation we get;
Now we will solve for 2 values of x we get;
Now we get 2 values of 'x' one positive and one negative.
Since x is base of the triangle which cannot be negative.
so we will discard the negative value.
Hence;
base of triangle = 12 ft
Height of the triangle =
Hence Base of the mirror is 12 feet and height of the mirror is 18 feet.
Answer:
13.29 square meters
Step-by-step explanation:
The two shorter sides of a right triangle have lengths of 9.88 meters and 2.69 meters
Two shorter sides are the base and the height of the right angle triangle
Area of the triangle is 1/2 times base times height
Area of the triangle is 13.2886
13.29 square meters