Posted by Kim on Friday, April 24, 2009 at 1:36am.
A painter needs to cover a triangular region 62 meters by 68 meters by 70 meters. A can of paint covers 70 square meters. How many cans will be needed?

Trigonometry  drwls, Friday, April 24, 2009 at 6:56am
Let s be half the sum of the three sides (100 m, in this case). If a, b and c are the side lengths of the triangle, the area is
sqrt[s(sa)(sb)(sc)]
= sqrt[100*38*32*30] = 1910 m^2
1910/70 = 27.3 cans are needed
Answer This Question
Related Questions
 math  a painter needs to cover a triangular region 60 meters by 68 meters by 71...
 math  A painter needs to cover a triangular region 62 meters by 66 meters by 71...
 math  A painter needs to cover a triangular region 62 meters by 66 meters by 71...
 Math  A painter needs to cover a triangular region 61 meters by 66 meters by 72...
 math  A cylinder shaped sculpture is 24 meters high with a diameter of 6.8 ...
 maths  A roof section of a house is a large triangle. it measures 6.4 meters at...
 Geometry  7. What is the surface are of a conical grain storage tank that has a...
 trigonometry  Nikki bought a triangular lot whose sides are 9 meters, 12 meters...
 math  The rectangular part of her pool is 8 meters by 6 meters. The triangular ...
 Math (1 question)  estimate the area of a circle with a radius of 27 meters. ...
More Related Questions