Answer:
Amount of sand=Area of triangle(ABC)=1/2*AB*BC
Dimension of rectangle as length=BC and breadth=AB
Step-by-step explanation:
Given:
Pedro building a playground in shape of right angled triangle.
To Find:
How much sand he need to buy
And if playground changed to rectangle what will be the dimensions.
Solution:
<em>Consider a ΔABC be the play ground vertex of playground,</em>
<em>And AB and BC be the sides making right angle.</em>
The sand required to fill ground will be the amount of are covered by the ABC triangle.
So,
Area Of triangle(ABC)=1/2* base* height
Here base will be BC and height =AB
Therefore Area of Triangle(ABC)=1/2*BC*AB
Depending on the lengths of base and height amount of sand will be decided.
Now,
<em>For Rectangle dimensions,</em>
<em>We know that if same sized triangles composes each other forms a rectangle</em>.
It requires two triangle to form one rectangle as follows
(Refer the attachment)
Same sized Triangle ACD is imposed on it to from rectangle ABCD.
So dimension for rectangle will be same as the triangle
Dimension=length and breadth
i.e. length=base of triangle=BC
Breadth=Height of triangle=AB
i.e Breadth =AB.
