David sells two calculators for ₹1500 each .He earns a profit of 25% on
1 answer:
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The answer is C:
Starting with the given formula for the area, A = 1/2hb, the first step is to isolate h by using the multiplicative inverse of b, which is on both sides of the equation:
The result will be:
The last step is to use the multiplicative inverse of , which is 2 or
to further isolate the variable <em>h </em>:
The formula for h will be:
which is the option C in your question.
Given:
The scale factor is 1:12.
Dimension of model = 32 cm
To find:
The actual dimension in m.
Solution:
Let x be the actual dimension.
The scale factor is 1:12 and the dimension of model is 32 cm.
On cross multiplication, we get
Therefore, the actual dimension is 3.84 m.