A scale drawing of a square has a side length of 9 millimeters. The drawing has a scale of 1 mm : 9 km. Find the actual perimeter and area of the square.

Answer 1

the actual side size is 9x9 = 81 km

Perimeter = 4(81) = 324 km There are 4 sides each equal to 81 km

Area = 81 squared = 6561 square km