Answer: 47 centimeters
1.735E-7 square kilometers
Explanation:
13cm + 34 cm= 47 cm
A circle of radius = 23.5 or diameter = 47 or circumference = 147.7 centimeters has an area of: 1.735E-7 square kilometers (km²) 0.1735 square meters (m²) 1735 square centimeters (cm²)
(Hope this helps)