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Anton [14]
2 years ago
14

In the diagram below, point D is the center of the circle, and the measure of BC is 50".

Mathematics
1 answer:
Alexxandr [17]2 years ago
8 0

Answer:

no

Step-by-step explanation:

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A student decided to start saving money. On the first day he saved 1 cent, on the second day an additional 2 cents, on the third
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$ 524.288

Step-by-step explanation:

We will use the sum of a geometric series;

S = (first term)(1-r^n)/(1-r)

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Please help ..............
Naddika [18.5K]
Break the problem into two parts:  1) the area of the this isosceles triangle whose hypotenuse is AB and 2) the area of the semicircle whose diameter is AB.

The triangle is isosceles because the lengths of the two shorter legs are the same (2 meters).  Use the Pythagorean Theorem to find the length of the hypotenuse of this triangle.  (AB)^2 = (2 m)^2 + (2 m)^2, or 8 m^2.  Thus, AB = sqrt(8 m^2), or 2sqrt(2).  This AB is also the base of the triangle.  What is the area of the triangle?

Next, noting that the diameter AB of the semicircle is 2sqrt(2) and the radius is just sqrt(2), find the area of the semicircle.  The area of a circle of radius r
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Add the area of the triangle to this area of the semicircle (2pi) to find the total area of the figure.

Hint:  the area of a triangle is (bh)/2, where h is the height, b is the base.
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