Question

A photograph has a width of 9.5cm and an area of 104.5cm(squared). An enlargement is to be made that has a width of 19cm. What will be the area of the enlargement?

Answer 1

Answer: Area = 389.5cm^2

Explanation:

Area = 104.5cm^2
Width = 9.5cm

Find Length:

L = A/W
L = 104.5/9.5
L = 11cm

Find the enlargement:

let x be the enlargement:
9.5cm + x = 19cm
x = 19 - 9.5
x = 9.5cm

Thus, the enlargement is 9.5cm.

L (after enlarging) = 11 + 9.5 = 20.5cm

W (after enlarging) = 19cm

Find area after enlarging:

A = 20.5 x 19
A = 389.5cm^2