In a class of 70 students, 40 belong to the Red Cross society, 27 belong to the Girls Guide Society and 12 belong to both the Red Cross Society and Girls Guide Society. The remaining students do not belong to any of the two societies. ( I) Illustrate the information on a venn diagram.
( ii) How many students belong to the Red Cross Society only?.
( iii ). How many students do not belong to any of the two societies?

d) 30 units^2

area of rectangle = l × b

we know,

length = 10 unit

breadth = 3 unit

applying the formula,

= l × b

= 10 × 3

= 30 unit^2

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8.75

how-to:

first, we need to find what we have to work with.

since i know that we have 7 (years) and 0.8 (inches), we can use these to solve and find the equation!

secondly, what you want to do, is see that we need to know how much growth out of the 0.8 inches he got in only 1 year, instead of 7 years.

let's try to divide.

7 ÷ 0.8 = 8.75

step-by-step explanation: 4x12ft

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