What ratio is equivalent to 3:4
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Lateral Area means Area of all four triangles
Now area of 1 triangle =
= square meters
Now for four triangles we multiply by 4
So
Lateral area of pyramid = m^2
that is Option D
so we know she has sculptures and paintings, if she sold twice as many paintings as sculptures, that means that for every 2 paintings, she sold 1 sculpture, so the paintings and sculptures are on a 2:1 ratio.
we know she sold a total of 57, so we'll need to split 57 in a 2:1 ratio, we'll simply divide the whole amount of 57 by (2+1) and distribute accordingly.