Need to find the radius

Any assistance much appreciated.

Note by Monty McGee
10 months, 1 week ago

No vote yet
1 vote

  Easy Math Editor

MarkdownAppears as
*italics* or _italics_ italics
**bold** or __bold__ bold

- bulleted
- list

  • bulleted
  • list

1. numbered
2. list

  1. numbered
  2. list
Note: you must add a full line of space before and after lists for them to show up correctly
paragraph 1

paragraph 2

paragraph 1

paragraph 2

[example link](https://brilliant.org)example link
> This is a quote
This is a quote
    # I indented these lines
    # 4 spaces, and now they show
    # up as a code block.

    print "hello world"
# I indented these lines
# 4 spaces, and now they show
# up as a code block.

print "hello world"
MathAppears as
Remember to wrap math in \( ... \) or \[ ... \] to ensure proper formatting.
2 \times 3 \( 2 \times 3 \)
2^{34} \( 2^{34} \)
a_{i-1} \( a_{i-1} \)
\frac{2}{3} \( \frac{2}{3} \)
\sqrt{2} \( \sqrt{2} \)
\sum_{i=1}^3 \( \sum_{i=1}^3 \)
\sin \theta \( \sin \theta \)
\boxed{123} \( \boxed{123} \)

Comments

Sort by:

Top Newest

sqrt [ r^2 - (r-1)^2 ] + r = 5;

r = 6 +/- sqrt(10);

r = 6 - sqrt(10);

r = 2.84

G Silb - 8 months, 3 weeks ago

Log in to reply

Thanks for the reply.

The drawing is not correct; I didn't draw it correctly with the Word drawing tool; it is supposed to be a circle.

Monty McGee - 10 months ago

Log in to reply

I don't think there is enough info to solve the problem. That's not a circle, it's an oval. It's wider than it is tall. It won't have 1 radius.

Dylan Valentine - 10 months ago

Log in to reply

Hint 1: Try forming a right triangle.

Hint 2: Let \(O\) be the center of the circle and \(X\) be the point where the rectangle touches the circle. Create a right triangle with \(OX\) as the hypotenuse and whose side lengths you can easily find.

Steven Yuan - 10 months, 1 week ago

Log in to reply

You are assuming that rectangle touches the circle, when the illustration shows that it doesn't.

Dylan Valentine - 10 months ago

Log in to reply

Thanks for the reply.

That's my fault; I didn't draw it correctly. The rectangle is indeed supposed to be touching the circle.

Monty McGee - 10 months ago

Log in to reply

Thanks, Steven. I tried that before but obviously did not hit upon the correct setup; will go at it again.

Monty

Monty McGee - 10 months, 1 week ago

Log in to reply

Have tried in vain to find the radius.

Monty McGee - 10 months, 1 week ago

Log in to reply

Ask Siri

Annie Li - 10 months ago

Log in to reply

Hi Annie. Thanks for the comment. Who is Siri ?

Monty McGee - 10 months ago

Log in to reply

Oh know, the apple help system. Here is some information about it: Siri

Annie Li - 10 months ago

Log in to reply

@Annie Li Thanks.

Monty McGee - 10 months ago

Log in to reply

@Monty McGee No probs. Just remember to thank Siri

Annie Li - 10 months ago

Log in to reply

×

Problem Loading...

Note Loading...

Set Loading...