Question

If the height of △ CBD is 1.4 meters and CD is 3.5 meters, how much glass is needed to
make the entire window?

Answer 1

Answer:

Glass needed will be the area of triangle CBD -

Area of triangle=Base × height ÷ 2

= 3.5× 1.4÷2

= 4.90÷2

=2.45

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Answer 2

Answer:

The amount of glass needed  = 4.45 $m^{2}$

Step-by-step explanation:

From the above question,

They have given :

Assuming that the width of the triangle is equal to the length of CD, then the area of the window is 4.45 meters squared.

If each pane of glass is 1 square meter, then you would need 4.45 panes of glass to make the entire window.

To calculate the width of the triangle:

       width = CD

                 = 3.5 m

To calculate the area of the window:

        area = 1/2 x (height x width)

                = 1/2 x (1.4 m x 3.5 m)

                = 4.45  $m^{2}$

The amount of glass needed:

         glass needed = area / 1  $m^{2}$

                                = 4.45  $m^{2}$

Hence, The amount of glass needed  = 4.45 $m^{2}$

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