Hello, ur5pointos2slo!

is the peak of the notch.A block of metal has a 90° notch cut from its lower surface.

The notched part rests on a circular cylinder of diameter 2.0 cm.

If the lower surface of the block is 1.3 cm above the base plane,

how deep is the notch?Code:*-----------------------* | | | A | | * | | /:\ | | / : \ | | /* * *\ | | B * : * C | | * 1\ : /1 * | | /* O *\ | *----* * | * *----* 1.3 * |1 * ------------* * *------------ D

. (Doesn't look like it in the diagram.)

is the center of the circle.

Radii cm.

are isosceles right triangles.

. . Hence: .

Then: .

Therefore, the depth of the notch is: .