Answer to Question #272803 in Physical geography for sevouamdom

Question

The base and height of a right angle triangle are 3cm and 6cm respectively.The scale is 1cm to 2km.What is the ground area of the right angle triangle

Answer 1

Since 1 cm is 2 km, 3 cm become 2·3=6 km, 6 cm become 2·6=12 km. The area is:

$$A=\frac12ab=\frac12·6·12=36\text{ km}^2.$$