Describe in general terms a way of determining the area of a deck that consists of a rectangle with a semicular end. Is anybody able to help me?
2007-02-15 13:24:32 · 8 answers · asked by Blessed 3 in Science & Mathematics ➔ Botany
Well, assuming the tree comes out of the ground at a 90 degree angle, you could go to the tip of its shadow, and measure the distance away from the base and the angle of elevation. Then, using the tangent (Opposite/adjacent) you could calculate the height of the tree. The deck could be devided into two areas: the rectangle, which would be found by length x width, and the circle, which would be found by a fraction of pi x r^2
2007-02-15 13:29:18 · answer #1 · answered by Anonymous · 0⤊ 0⤋
This is super for teaching young people the importance of a 45 degree angle..Make a 45 degree angle out of cardboard..Hold it at eye level and walk backwards until you can see the top of the tree from the degree angle of the cardboard..Measure the distance to the base of the tree and add your height..The answer is the height of the tree..I hope that this answer has been helpful.
2015-12-19 07:32:13 · answer #2 · answered by Tony 1 · 0⤊ 0⤋
Use trig. Measure a distance from the base of the tree out, determine the angle from that spot to the top of the three. Not very accurate, though.
2016-05-24 05:23:08 · answer #3 · answered by Anonymous · 0⤊ 0⤋
measure the angle where you stand to the top of the tree with a protractor and straw like a sextant tool .now measure the distance from the tree feet/ meter, whatever tangent of the angle times the distance from the tree plus your height.ie.
example 6 ft @ 70 degrees to the top of the tree plus 6 ft for the 6 ft observer.16 .5 ft + 6 ft =22.5 ft is the top of your tree
2007-02-15 14:41:24 · answer #4 · answered by dark_mirrors 2 · 0⤊ 0⤋
You don't need trig.
Set up a pole of known height in the sun. Measure the length of the shadow, "s." Measure the length of the tree's shadow, "S."
The height of the tree "x" divided by the height of the pole "h" will equal the S divided by s.
x/h = S/s
or
x = (hS)/s
The height of the tree equals hS divided by s.
2007-02-15 15:47:39 · answer #5 · answered by The First Dragon 7 · 0⤊ 0⤋
Trigonometry
SEE: http://mathforum.org/library/drmath/view/54084.html
Also SEE: http://mathforum.org/library/drmath/sets/high_trigonometry.html
2007-02-15 13:27:19 · answer #6 · answered by Life after 45 6 · 0⤊ 0⤋
well: see you can tell by looking at it
like hight 7ft ,weight 250lbs age,by counting the number of rings
on the Stump refer http://www.natural.pinetrees.com
2007-02-15 13:38:06 · answer #7 · answered by toddk57@sbcglobal.net 6 · 0⤊ 1⤋
using trig, you could find it out by using triangles.
2007-02-15 13:32:00 · answer #8 · answered by d3n1se6 2 · 0⤊ 1⤋