Answer :

Answer: 47 centimeters

1.735E-7 square kilometers

Step-by-step 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)