Friday

April 25, 2014

April 25, 2014

Posted by **Stephanie** on Tuesday, February 12, 2013 at 5:53pm.

#1

if the radius of the two areas is 12in find the length of a chord of an arc of 45, 35, and 60 degrees.

#2 the bases of a trapezoid are 30in and 9in and the nonparallel sides are 10in and 17in. Find the area.

- Geometry -
**Steve**, Tuesday, February 12, 2013 at 6:26pm#2.

Draw the trapezoid. The ends are two triangles with bases x and 21-x (why?)

If the height is h,

x^2+h^2 = 10^2

(20-x)^2 + h^2 = 17^2

equating the two expressions for h^2, we have

17^2 - (21-x)^2 = 10^2 - x^2

Now you can solve for x, and then h.

The area is then (30+9)/2 * h

- Geometry -
**Stephanie**, Tuesday, February 12, 2013 at 7:03pmThank you so much Steve!

**Related Questions**

Geometry - I have two questions... #1 if the radius of the two areas is 12in ...

Geometry - I HAVE A QUESTION. When I post a question and there is now response ...

Math - I have two questions that I need help with. 1. Angle of Depression: A ...

Math - These questions that I have completed are on a test review for my exam ...

geometry - Circle A has radius 6. Circle B has radius 10. They cross at two ...

Math(Please check answers) - These questions that I have completed are on a ...

Math- Geometry Proofs - What are some ways to prove that a triange is isoscles? ...

Geometry - Determine whether each statement is always, sometimes, or never true...

Geometry - What is the circumference of the circle if the radius is: 5x-My ...

Geometry - Two cylinders have the same volume. If the radius of cylinder I is 3 ...