Sometimes, a simple drawing is a great way to start! In the attached drawing, the red line represents the ladder, the brown represents the ground, and the black represents the building!
We want to find the side of the triangle from where the ladder meets the building to where the building meets the ground. This can be found using trigonometric identities, namely sine:
So assuming that 25cm is 25 square cm because you cannot have a 2 dimentional cake so
600mm by 500mm to find the area, multiply legnth by width
mm=milimeters cm=centimeters this is in mm so 1cm=10mm 1mm=1/10cm to convert from mm to cm, you divide by 10 we must divide by 10 first legnth =600mm 600/10=60cm legnth=60cm
width=500mm 500/10=50cm width=50cm
area=60 times 50=3000 square cm or cm^2 so 3000 is the area 25 is the area of each cake divide 3000 into 25 and find how many cakes will fit