# What pressure is exerted by the tip of a nail struck with a force of 20000 N Assume the tip is a 1.5-mm-radius circle?

The idea is to divide force / area. Ask a separate question if you need help to find the area of the circle. And be sure to convert the area of the circle to square meters (1 meter = 1000 mm, therefore, 1 square meter = 1 million square millimeters). Note: Don't get too surprised if the answer is a large number.

### What is the distance between the focus of a circle and the outside?

We're not sure what the 'focus' of a circle is, but since there's only one significant point inside a circle, we'll assume the question is referring to the 'center', and we'll assume the 'outside' means the circular line (which is actually the circle). (Isn't it great that before we can do an answer around here, we have to re-write the question so that it makes sense ! ?) The distance between the center of a…

### What is the length of a circle with a diameter 16centimetres?

I'm not sure what you mean by "length" of a circle. I'm going to take a wild guess and assume you mean the distance around the circle. The circumference of a circle (distance around it) is (pi) x (diameter). If the diameter is 16 centimeters, then the circumference is 16 pi = 50.2655 centimeters. (rounded)

### Is a circle with a area of 40 more less or same than a circle with a radius of 4?

In order to even discuss this question, we must assume that the unit of the '40' is the square of the unit of the '4'. -- The radius, diameter, and circumference of the circle with an area of 40 are each 10.794% shorter than the corresponding measurement in the circle with radius = 4 . -- Its area (40) is 20.423% less than the area of the circle with the radius of 4 .

### What is the area of a circle that is 6.8 yd?

First, I'll assume that you mean the radius of the circle is 6.8 yards. The area of a circle is found using the formula (pi)r2 Note: the radius of a circle is half its diameter. Substituting yields (3.14)(6.82) = (3.14)(46.24) = 145.1936 Remember to round to the correct number of significant figures - in this case 2. Your final answer will be 150 yd2