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coldgirl [10]
3 years ago
9

each blade on a windmill is in the shape of a triangle with a base of 7 feet and a height of 4 ft if there are four blades on th

e windmill what is the total area of the blades
Mathematics
2 answers:
Alina [70]3 years ago
8 0

Each blade on a windmill is in the shape of a triangle with a base of 7 feet and a height of 4 ft if there are four blades on the windmill what is the total area of the blades

Total area of blades= Sum of areas of all blades

=Sum of areas of four blades

As, all blades have same dimension

SO, Total area of blades=4*Area of one blade

As, shape of blade is triangle, Area of triangle=\frac{1}{2}*base*height

Total Area of blades =4* \frac{1}{2} * base * height

Total Area of blades =4* \frac{1}{2} * 7 * 4

Total Area of blades =4* \frac{1}{2} * 28

Total Area of blades =4* 14

Total Area of blades =56 square feet

Sunny_sXe [5.5K]3 years ago
6 0

The total area of the blades is the area of a triangle multiplied by 4.

We have then:

A = (4) * (1/2) * (b) * (h)

Where,

b: base of the blades

h: height of the blades

Substituting values we have:

A = (4) * (1/2) * (7) * (4)

Doing the calculation we have that the area of the blades is given by:

A = 56 feet ^ 2

Answer:

The total area of the blades is:

A = 56 feet ^ 2

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Step-by-step explanation:

Growth rate problem that has a growth rate proportional to the population size can be solved using the equation:

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after 25 years:

P(25)=(51965000)e^{(0.031)(25)}=112794819.9

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