The amount of soil needed to cover the garden is 49 sq.ft, the correct option is C.
What is Pythagoras Theorem?
According to Pythagoras Theorem, in a right angled triangle the square of the side opposite to the right angle is equal to the sum of squares of the other two sides.
Height² + Base² = Hypotenuse²
The right triangle has hypotenuse of 14ft
As the other two angles are eqaul
The base and height of the triangle will be equal
Let the base and height of the triangle is x ft
By Pythagoras theorem,
x² +x²= 14²
2x² = 196
x² = 98
x = 9.9 ft
The area of the triangle will be equal to needed to cover the garden with a layer of soil
The area of the triangle is = (1/2) * base * height
Area of the triangle = (1/2) * 9.9 * 9.9
Area of the triangle is 49 sq.ft
To know more about Pythagoras Theorem
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