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plz help plz help me plz help me plz help me I don't want to get grounded the whole summer the question is. the window has the shape of a kite how many square meters of glass were used to make the window? ​

plz help plz help me plz help me plz help me I dont want to get grounded the whole summer the question is the window has the shape of a kite how many square met class=

Respuesta :

Answer:

648 cm ²

Step-by-step explanation:

Lets solve each triangle 1-by-1.

Note that the area of a triangle is: [tex]\frac{1}{2}[/tex] · l · h

Area of the top triangle(s):

[tex]\frac{1}{2}[/tex] · 18 · 15 = 135 cm

[tex]\frac{1}{2}[/tex] · 18 · 15 = 135 cm

135 + 135 = 270 cm

Area of the lower triangle(s):

[tex]\frac{1}{2}[/tex] · 21 · 18 = 189 cm

[tex]\frac{1}{2}[/tex] · 21 · 18 = 189 cm

189 + 189 = 378 cm

Total area:

378 + 270 = 648 cm ²

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