What is the area of the equilateral triangle? Round to the nearest square centimeter. Do not include units

Mathematics

2 answers:

ziro4ka [17]3 years ago

5 0

The answer should be around 28 square centi. rounding from about 27.71

swat323 years ago

3 0

Area of an equilateral triangle is:

$\frac{ \sqrt{3}}{4} 8^{2}=16\sqrt{3}=27.7128≈28$

so your answer is 28

You might be interested in

20 POINTS

denis-greek [22]

Answer:

c. 441ft^2

Step-by-step explanation:

Area is height times length and since it's a square, safe to say that the sides are equal in length. So square root both of the given areas of the 2 square:

$\sqrt{841}$ = 29

$\sqrt{400}$ = 20

Now u have side b and c of the triangle, it's a right triangle so use the Pythagorean theorem a^2 + b^2 = c^2

a^2 + b^2 = c^2

a^2 + 20^2 = 29^2

a^2 + 400 = 841

subtract 4 from both sides

a^2 = 441

square root both sides

$\sqrt{a^2} = \sqrt{441}$

a = 21

Now the side a of the triangle is also a side of the small square therefore

21^2 = 441

8 0

3 years ago

A composite figure is made up of a triangular prism on top of a rectangular prism. Which of the following surface area equations

Aloiza [94]

In this problem the surface area of the composite figure is equal to the area of the base of the rectangular prism plus the lateral area of the rectangular prism, plus the area of the two triangular faces of triangular prism, plus the area of two rectangular faces of the triangular prism. we know that