How to calculate the are of a shape

1 answer:

6 0

This can vary, some shapes have different area formulas, here are some basic formulas I can give you:
Circle: A = $\pi$ $r^{2}$ Triangle: A = $\frac{h_{b} b}{2}$ Square: A = $a^{2}$ Rectangle: A = L*W

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Solve the equation -15=a/5 A=-3 A=-20 A=-10 A=-75

agasfer [191]

To solve any equation, you do whatever you need to do
to wind up with the unknown quantity all alone on one side.
BUT ... whatever you do to one side of the equation, you must
also do to the other side.

Here, we have the
he original equation: -15 = a/5

Multiply each side by 5 : -75 = a

and bada-bing, THERE's the solution !

4 0

3 years ago

A student determined that the area of the segment of c shown above is Asegment = 137.71 ft2. The student's work is shown below.

ivolga24 [154]

Answer:

Option D. The student did not use the correct formula to calculate the area of the segment

Step-by-step explanation:

step 1

Find the area of the isosceles triangle

Applying the law of sines

$A=\frac{1}{2}(12^{2})sin(60\°)=62.35\ ft^{2}$