STRETCHOUT OF ROUND OBJECTS

Given:

Diameter of the round pipe= D Length of the round pipe= 1

Problem:

The size of flat sheet necessary to form pipe.

Solution:

STRETCHOUT OF A RIGHT CIRCULAR CONE

The stretchout of a right circular cone will be a portion of a circle whose radius (S) is equal to the slant height of the cone.

To determine how much of the circle will be required for the cone, you measure on the circumference of this circle the circumference of a circle of radius R.

AREAS

All areas are measured in squares. Illustration:

Let one side of a square be s.

This is a square s or sz.

Ifs equals 1 inch then this would be 1 square inch. Ifs equals 1 foot then this would be 1 square foot, etc.

The area of a square is the product of two of its sides and since both sides are equal, it may be said to be the square of its side.

NOTE: The area of any plane surface is the measure of the number of squares contained in the object. The unit of measurement is the square of the unit which measures the sides of the square.

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