Final answer:
FALSE. Radial engines have an even number of cylinders, not an odd number.
Step-by-step explanation:
Radial engines have an even number of cylinders, not an odd number. In a radial engine, the cylinders are arranged in a star pattern around the crankshaft. Each cylinder has its own piston, and the pistons are connected to the crankshaft, causing it to rotate. Examples of radial engines include those used in older aircraft like the Radial Wasp engine used in the Boeing B-17 Flying Fortress.