ABC is a triangle with height of 4 cm and base of 7 cm,drawn to a scale of 1cm:3km. Find the actual area of the triangle.

How to solve such questions ?

Printable View

- Jul 4th 2010, 07:59 AMhaftakhanArea of scaled down triangle
ABC is a triangle with height of 4 cm and base of 7 cm,drawn to a scale of 1cm:3km. Find the actual area of the triangle.

How to solve such questions ? - Jul 4th 2010, 08:15 AMskeeter
- Jul 4th 2010, 09:03 AMhaftakhan
A=1/2*(4*3)(7*3)

A=126km square

Right ? - Jul 4th 2010, 09:36 AMUnknown008
Right! (Happy)

- Jul 4th 2010, 12:58 PMHallsofIvy
Yes, that is correct.(Clapping) Skeeters point was this: A triangle with height 4 cm and base 7 cm has area (1/2)(4)(7)= 2(7)= 14 square cm. Since the scale is "1 cm to 3 km", and area is "length squared", that becomes 9*14 square km= 126 square km. Of course, the way you didn't is perfectly correct (and better than following someone else's method).