3 years ago

Using a compass, Jane draws a circle on her paper with a radius of 2.5 inches. What is the area of the circle?

1 answer:

vazorg [7]3 years ago

6 0

Formula is A=3.14•r^2 so 19.625 in^2 or b

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Harlamova29_29 [7]

Answer:

-2 = not in domain

0= in domain

3= in domain

7 0

4 years ago

krok68 [10]

This is a right triangle, the measure of angle A is 90 degrees.

First thing to do I guess is finding B and C.

tan^-1 (7/12) = 30 degrees

tan^-1 (12/7) = 60 degrees

60 + 30 = 90

180 - 90 = 90. Therefore angle A = 90 degrees

5 0

4 years ago

FrozenT [24]

Check the picture below.

6 0

4 years ago

Tems11 [23]

$\sin x>0$ when $x$ is in quadrant II, so

$\cos^2x+\sin^2x=1\implies\sin x=\sqrt{1-\cos^2x}=\sqrt{1-(-0.2)^2}\approx1.02$

7 0

3 years ago

Sonja [21]

Use the Pythagorean theorem
A^2+b^2=c^2
12^2+5^2=c^2
144+25=c^2
169=c^2
13=c
13 foot ladder

6 0

3 years ago