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How many square feet are there in the convex surface of the frustum of a square pyramid, whose slant height is 10 feet, each side of the lower base 3 feet 4 inches, and each side of the upper base 2 feet 2 inches ? Ans.
Elements of Geometry and Trigonometry - Page 287
by Adrien Marie Legendre - 1837 - 359 pages

The New Normal Written Arithmetic: Designed for Common Schools, Normal ...

Edward Brooks - Arithmetic - 1877 - 444 pages
...perimeters or circumferences of the ttho bases, and multiply it by one-half the slant height. 1. Required the convex surface of the frustum of a square pyramid whose slant height is 24 feet, the side of the lower base 12 feet, and upper base 8 feet. Ans. 960 sq. ft. 2. Required the...

Elements of Geometry and Trigonometry from the Works of A.M. Legendre ...

Charles Davies, Adrien Marie Legendre - Geometry - 1885 - 538 pages
...the perimeters of the two bases by the slant height; the product will be the area required. Examples. 1. How many square feet are there in the convex surface...each side of the upper base 2 feet 2 inches? Ans. 110 sq. ft. 2. What is the convex surface of the frustum of a heptagonal pyramid, whose slant height is...

Complete Arithmetic: Combining Oral and Written Exercises

Edward Sylvester Ellis - Arithmetic - 1889 - 370 pages
...sum of the perimeters of the two bases by one half the slant height. WRITTEN EXERCISES. 1. What is the convex surface of the frustum of a square pyramid whose slant height is 18 feet, the side of the upper base 5 feet and of the lower base 12 feet ? 2. What is the convex surface...

A Complete Arithmetic: With Oral and Written Exercises

George Washington Hull - Arithmetic - 1895 - 396 pages
...perimeters or circumferences of the bases by one-half the slant height. WRITTEN EXERCISES. 1. Find the convex surface of the frustum of a square pyramid whose slant height is 24 ft., and the side of the lower base 10 ft. and upper base 6 ft. 2. Find the convex surface of the...

The Normal Standard Arithmetic: By Analysis and Induction, Designed for ...

Edward Brooks - Arithmetic - 1895 - 430 pages
...multiply this sum by one-third of the altitude of the frustum. WRITTEN EXERCISES. 1. Required the lateral surface of the frustum of a square pyramid whose slant height is 20 feet, the side of the lower base 18 feet and upper base 12 feet. Ans. 1200 sq. ft. 2. Required the...

Elements of Geometry

Andrew Wheeler Phillips, Irving Fisher - Geometry - 1897 - 374 pages
...regular triangular pyramid whose slant height is 15 ft., and each side of the base 4 ft. ? 124. What is the convex surface of the frustum of a square pyramid whose slant height is 14 ft., each side of the lower base being 3^ ft. and each side of the upper base 2-J ft. ? 125. What...

Elements of Geometry

Andrew Wheeler Phillips, Irving Fisher - Geometry - 1897 - 376 pages
...regular triangular pyramid whose slant height is 15 ft., and each side of the base 4 ft. ? 124. What is the convex surface of the frustum of a square pyramid whose slant height is 14 ft., each side of the lower base being 3^ ft. and each side of the upper base 2^ ft. ? 125. What...