...be equal to -j of the base? 4. If the slant height of a right cone is a, and the area of the base b, find the area of a section made by a plane parallel to the base, at the distance c from the vertex. 5. The slant height of a right cone is 2 ft. At what distance from...

...be equal to \ of the base? 4. If the slant height of a right cone is a, and the area of the base b, find the area of a section made by a plane parallel to the base, at the distance c from the vertex. 5. The slant height of a right cone is 2 ft. At what distance from...

...equal to -J. of the base? 4. If the slant height of a right cone is a, and the area of the base b, find the area of a section made by a plane parallel to the base, at the distance c from the vertex. 5. The slant height of a right cone is 2 ft. At what distance from...

...feet: find the height of the pyramid. 53. A pyramid 16 feet high has a square base 10 feet on a side. Find the area of a section made by a plane parallel to the base and 6 feet from the vertex. 54. The base of a regular pyramid is a hexagon of which the side is 4 feet....

...= 4: A, Ex. 505. A pyramid 12 feet high has a square base measuring 8 feet on a side. What will be the area of a section made by a plane parallel to the base and 4 feet from the vertex ? 122 : 42 = 82 : x, 144 : 16 = 64 : », 9: 1 = 64:*, a; = V = 7.11 sq.ft. Ex....

...the section may contain 100 sq. ft. ? 3. A pyramid 16 ft. high has a square base 10 ft. on a side. Find the area of a section made by a plane parallel to the base and 6 ft. from the vertex. 4. The volume of the frustum of a regular hexagonal pyramid is 12 cu. ft., the...

...of the frustum. 22. A pyramid 24 ft. high has a square base measuring 16 ft. on a side. What will be the area of a section made by a plane parallel to the base and 4 ft. from the vertex ? 23. An equilateral triangle revolves about one of its altitudes. What is the...

...Ex. 1104. The altitude of a regular triangular pyramid, each side of whose base is 4 ft., is 12 ft. Find the area of a section made by a plane parallel to the base and 4 ft. from the vertex. Ex. 1105. Find the area of a section of a regular quadrangular pyramid, each...

...Ex. 1104. The altitude of a regular triangular pyramid, each side of whose base is 4 ft., is 12 ft. Find the area of a section made by a plane parallel to the base and 4 ft. from the vertex. Ex. 1105. Find the area of a section of a regular quadrangular pyramid, each...

...Ex. 1104. The altitude of a regular triangular pyramid, each side of whose base is 4 ft., is 12 ft. Find the area of a section made by a plane parallel to the base and 4 ft. from the vertex. Ex. 1105. Find the area of a section of a regular quadrangular pyramid, each...