The area of the playground of dimensions 18 and 240is 432 
.
Given If the dimensions of the playground in the layout are given by 180 cm x 240 cm.
The area of rectangle is length *breadth.
The given playground is in the shape of rectangle because there are two sides given and both the sides are different. In a rectangle length of opposite side found to be equal and each side form an angle of 90 degree.
Area=length*breadth
=180*240
=43200 
We have to convert in meters so we have to divide by 100.
Area=43200
=43200/100
=432
Hence the area of playground having dimensions 180 cm and 240 cm is 432.
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The statements that would prove the lines are parallel are;
∠GHI ≅ ∠KJH
∠MJH + ∠NHJ = 180°
∠KJH + ∠IHJ = 180°
<h3>How to Identify Congruent Angles?</h3>
In congruency of angles formed in this type of scenario, we will make use of the following rules;
- If two parallel lines are cut by a transversal, then, Alternate Interior Angles are congruent.
- If two parallel lines are cut by a transversal, then, Alternate Exterior Angles are congruent.
- If two parallel lines are cut by a transversal, then corresponding angles are congruent.
Using the above congruency rules and applying them to our question, we can say that for lines HN and KM to be parallel to each other, then;
∠GHI ≅ ∠KJH because they are corresponding angles
∠MJH + ∠NHJ = 180° because they are supplementary angles
∠KJH + ∠IHJ = 180° because they are supplementary angles
Read more about Congruent Angles at; brainly.com/question/24607467
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So you just have to subtract 15 - 7.5 = 7.5
because 7 x 2=14
and .5 +.5 = 1
and 14 + 1= 15
