Comparing the Three Sectors

In a certain zoo, there are 42 animals in one sector, 34 in the second sector and 20 in the third sector. Out ofthis, 24 graze in sector one and also in sector two. 10 graze in sector two and sector three. 12 graze in sector one and sector three. These figures also include four animals grazing in all the three sectors. If all these animals are now transported to another zoo, then find the total number of animals?

A circular disc of radius 6 cm is divided into three sectors with central angles 90^(@), 120^(@) and 150^(@) . What part of the whole circle is the sector with central angle 150^(@) ? Also, calculate the ratio of the areas of the three sectors.

DeltaLMN is an equilateral triangle. LM = 14 cm As shown in figure, three sectors are drawn with vertices as centres and radius 7 cm. Find, Total area of all the three sectors.