7 triangle

The triangle area is 26.7 cm2. Determine the side length l if appropriate height hl = 45.3 cm.

Correct result:

l =  1.2 cm

Solution:

S=lhl2 2S=l⋅hl l⋅hl=2⋅S  l=2⋅Shl=2⋅26.745.3 l=1.2 cm

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