Manila is 36% larger than Pasig.
Area: 42 km2 calculated
Manila is the capital and second largest city of the Philippines. It is one of the sixteen cities which, along with the municipality of Pateros, make up Metro Manila, the National Capital Region, whose overall population is around 12 million. Wikipedia
Area: 31 km2 calculated
Pasig, officially the City of Pasig is one of the highly urbanized cities of Metro Manila in the Philippines and was the former capital of the province of Rizal prior to the formation the National Capital Region. Wikipedia