Question

Danny had his palm impression on a grid sheet and it covers 12 complete grids, 5 more than half grids and 3 less than half grids. If each grid occupies 1 $c{m}^2$ then what is the space occupied by his palm?

• A. 12 $c{m}^2$
• B. 23 $c{m}^2$
• C. 18 $c{m}^2$
• D. 17 $c{m}^2$

Answer 1

The correct option is D 17 $c{m}^2$

Given,
Space occupied by each grid = 1 $c{m}^2$
Number of complete grids occupied = 12
Number of more than half grids occupied = 5
And, number of less than half grids occupied = 3

So, space occupied by his hand is:
Area = 12 × 1 + 5 × 1 + 3 × 0 = 17 $c{m}^2$