SOLUTION: A children's play area is trI angular. The sides of the play area measure 90m, 225m and 255m respectively. Calculate the area of the play area.

Question 1037402: A children's play area is trI angular. The sides of the play area measure 90m, 225m and 255m respectively.
Calculate the area of the play area.
Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39621)   (Show Source): You can put this solution on YOUR website!
Choose any side to serve as a base. A good choice is the 90 meter side, because this triangle is isosceles with two equal sides 225 meters. The triangle is composed of two congruent right triangles sharing a height; this height being the longer leg of either right triangle. Call this h.

OR

Formula for area of a triangle: , using b for base, and the same h for height.
Answer by ikleyn(52817)   (Show Source): You can put this solution on YOUR website!
.
A children's play area is trI angular. The sides of the play area measure 90m, 225m and 255m respectively.
Calculate the area of the play area.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Use the Heron's formula.

See the lessons
    - Proof of the Heron's formula for the area of a triangle
    - One more proof of the Heron's formula for the area of a triangle
in this site.

The rest is arithmetic.

The previous solution is wrong.

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