Find the area of the shaded sector. Leave answer in terms of pie

Mathematics

2 answers:

bija089 [108]3 years ago

6 0

a) 25 pi / 2 m^2 hoped i helped

aliina [53]3 years ago

4 0

A = pi r^2
A = 5^2 pi
A = 25 Pi

so semi-circle = 25 pi / 2

answer is a) 25 pi / 2 m^2

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Three locations are marked next to a river. Points B and C are on the same side of the river, and point A is on the other side o

nlexa [21]

Answer:

74.31353

=74 m

Step-by-step explanation:

given that three locations are marked next to a river. Points B and C are on the same side of the river, and point A is on the other side of the river. To find the distance AB across a river, a distance BC of 241 meters is laid off on one side of the river. It is found that the angle at point B is 108.6° and the angle at point C is 14.9°.

we have information about triangle ABC as side BC =241, Angle B = 108.6 and angle C = 14.9 degrees.

Hence this is an obtuse scalene triangle.

Angle ∠A = 56.5° (III angle)

Using sine formula we get

$\frac{AB}{sin 14.6} =\frac{BC}{sin 56.5} \\AB = 74.31353$

So distance AB is 74 metres.

5 0

3 years ago

Does anyone understand atleast one of them

pickupchik [31]

Answer:

Look in explanation.

Step-by-step explanation:

1. $76543^{-4}$ is the same as $\frac{1}{76543^{4} }$ because since there is a negative exponent, you would want to flip the reciprocal and change the negative to positive.