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Question 6 options:
A triangle has an area of 40 cm². The base and height are scaled by a factor of 4.

The area of the resulting triangle is ___ square cm.

Respuesta :

40×4×4=640

b=20 h=4

using formula:

1/2×base×height

1/2×20×4=40

its says scale by factor 4:

b=80 h=16

using formula:

1/2×base×height

1/2×80×16=640

answer------>>>>640cm^2