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This diagram shows a scale drawing for small amphitheater if the scale factor is 1 cm= 10m, what is the area of the actual amphitheater.

A. =40m2
B.=80m2
C.=4,000m2
D.=8,000m2

Please help I will put who right

This diagram shows a scale drawing for small amphitheater if the scale factor is 1 cm 10m what is the area of the actual amphitheater A 40m2 B80m2 C4000m2 D8000 class=

Respuesta :

A =(b1+b2)h/2
actual b1 =10cm*10m/1cm =100m
actual b2 = 6cm*10m/1 cm = 60m
height = 5 cm*10m/1cm = 50m

A=(100+60)*50/2 = 160*50/2 =80*50= 4,000 m²

Answer : C.=4,000 m²

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