Question

The spinner of the compass is two congruent isosceles triangles connected by their bases as shown in the diagram. The base of each of these triangles is 2 centimeters and the legs are 5 centimeters.
If the metal used to construct the spinner costs $13.25 per square centimeter, how much will it cost to make this part of the compass? Round to the nearest cent.

Cost =

Answer 1

Answer:

$ 129.82 because it is to the nearest cent

Answer 2

Answer:

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Step-by-step explanation:

By pythagorean theorum we calculate the height:

$\sqrt{5^2-1^2}$

=$\sqrt{24}$ = height of triangle

area of triangle = base * height

area = $2*\sqrt{24}$

There are two triangles so:

$2*2*\sqrt{24}=4\sqrt{24}$

Multiply this by 13.25 to get total cost:

=$259.65