Question

3 Sandra admires a beautiful stained glass window in a museum: The window is shown in the figure. 18 ft F6 ft 12 ft How many square feet of glass is used to create the window\

PLS HELP ME I BEG U

Answer 1

F)
`380(4)/(7)ft^2`

Explanation:

Find the area of each part

Area of right triangle:
`A=(1)/(2)bh=(1)/(2)(6)(18)=(3)(18)=54ft^2`

Area of rectangle:
`A=bh=(12)(18)=216ft^2`

Area of left triangle:
`A=54ft^2` (this is because both triangles are congruent)

Area of semicircle:
`A=(1)/(2)\pi r^2=(1)/(2)((22)/(7))((12)/(2))^2=(22)/(14)(6)^2=(11)/(7)(36)=56(4)/(7)ft^2`

Add up all the areas

`A=54ft^2+216ft^2+54ft^2+56(4)/(7)ft^2=380(4)/(7)ft^2`