Question

Solve the following problem, Nella prints, a photo of a coverage bridge. The print measure 6 cm x 4 cm she wants to resize the photo into the size of a postcard with a length of 15 cm. What will be the area of the postcard

Answer 1

First, we need to determine the width of the postcard by using the proportion of the original photo's dimensions:

Original width / Original height = New width / New height
6 cm / 4 cm = New width / 15 cm

Cross multiplying, we get:
4(New width) = 6 x 15
4(New width) = 90
New width = 22.5 cm

Now we can calculate the area of the postcard:
Area = length x width
Area = 15 cm x 22.5 cm
Area = 337.5 square cm

Therefore, the area of the postcard will be 337.5 square centimeters.