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3 years ago

What is the area of the triangle shown? A) 5 B) 6 C) 12 D) 30

Mathematics

2 answers:

goldfiish [28.3K]3 years ago

4 0

The answer would be B. Area=base multiplied by the height. Turn the triangle into the square. Then you simply count the number of squares of the height to get 4. Then, count the number of squares of the base to get 3. 4 times 3 to get 12. NOW, there's one more step. Because the formula of the area of a triangle is base times height divided by 2, and since 12 is the area of the imaginary square, we have to turn it back into a triangle by dividing 12 by 2. This leads to a result of 6.

Soloha48 [4]3 years ago

3 0

The answer is 12. hope that helped

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2 years ago

An in ground rectangular pool has a concrete pathway surrounding the pool. if the pool is 16 feet by 32 feet and the entire area

Anastasy [175]

1. Let's call:

x: the width of the walkway.
b: 2x+16 (there is a widht "x" of the walkway on each side).
h: 2x+32 (there is a widht "x" of the walkway on each side).
A: 924 ft^2 ( the area of the pool of including the walkway).

2. The area of a rectangle is:

A=(b)(h)

b: the base of the rectangle (2x+16)
a: the height of the rectangle (2x+32)

3. Then, we have a quadratic equation:

924=(2x+16)(2x+32)
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4. We apply the quadratic formula to find the value of "x":

x=(-b±√(b^2-4ac))/2a

x=3.71

The answer is: The width of the walkway is 3.71 ft

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