When we know all 3 sides of a triangle, we can calculate area by using Heron's Formula. (see attached). Where s is the SEMI-PERIMETER
perimeter = 60 + 68 +71 = 199
SEMI-Perimeter = 199/2 = 99.5
Area = sq root (99.5 * (99.5-60) * (99.5-68) * (99.5-71)
Area = sq root (99.5 * 39.5 * 31.5 * 28.5)
Area = sq root (
3,528,381.94
)
Area =
1,878.4 square meters
1,878.4 / 70 sq mtr per can means you will need
26.83 cans OR 27 cans
