Math help
posted by SRay .
Ormeau Park in Belfast has an area of about 25 cm2 on the same map. Calculate the area of the park on the ground. Give your answer in km2, correct to 2 significant figures

You have omitted information (the scale of the "same" map) that is needed to answer the questiuon. Perhaps this is part of a multipart question.
Find the km per cm factor of the map and square it for km^2 per cm^2. Then use that as a multiplier of 25 cm^2. 
what is mdxi

MDXI is the Roman numeral for 1511