16. In AABC it is known that AB = 13, BC = 14 and AC = 15. Let D and E be the feet if the altitudes from A and B, respectively. Find the circumference of the circumcircle of ACDE.

Elementary Geometry For College Students, 7e
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ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
Chapter8: Areas Of Polygons And Circles
Section8.2: Perimeter And Area Of Polygons
Problem 38E: Examine several rectangles, each with an area of 36 in2, and find the dimensions of the rectangle...
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I need answers for items no. 16 and 17.

16. In AABC it is known that AB = 13, BC = 14 and AC = 15. Let D and E be the feet
if the altitudes from A and B, respectively. Find the circumference of the circumcircle
of ACDE.
17. A 6 cm x 12 cm × 22 cm rectangular block of wood is painted blue and then cut into
small cubes, each of which ahs a surface area of 6 cm². Find the number of small cubes
that have blue paint on exactly two faces.
Transcribed Image Text:16. In AABC it is known that AB = 13, BC = 14 and AC = 15. Let D and E be the feet if the altitudes from A and B, respectively. Find the circumference of the circumcircle of ACDE. 17. A 6 cm x 12 cm × 22 cm rectangular block of wood is painted blue and then cut into small cubes, each of which ahs a surface area of 6 cm². Find the number of small cubes that have blue paint on exactly two faces.
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