A rectangular piece of fabric measures 37 by 45 inches. A triangular scarf with a height of 21 inches and a base of 25 inches is cut from the fabric. How much fabric is left over?

2,190 in.2

36 in.2

1,140 in.2

1,402.5 in.2

Respuesta :

Answer:

The fabric is left over be 1402.5 inches² .  

Step-by-step explanation:

Formula

Area of a rectangle = Length × Breadth

[tex]Area\ of\ a\ triangle = \frac{1}{2}\ base\ height[/tex]

As given

A rectangular piece of fabric measures 37 by 45 inches.

Put all the values in the formula

Area of a rectanglar piece of fabric  = 37 × 45

                                                            = 1665 inches²

A triangular scarf with a height of 21 inches and a base of 25 inches is cut from the fabric.

[tex]Area\ of\ a\ triangular\ scarf = \frac{1}{2}\times 25\times 21[/tex]

[tex]Area\ of\ a\ triangular\ scarf = \frac{1\times 25\times 21}{2}[/tex]

[tex]Area\ of\ a\ triangular\ scarf = \frac{525}{2}[/tex]

                                                     = 262.5 inches²

Thus

Fabric is left over =  Area of a rectanglar piece of fabric - Area of a triangular scarf

Fabric is left over = 1665 - 262.5

                             = 1402.5 inches²

Therefore the fabric is left over be 1402.5 inches² .