Aceiling fan has five equally spaced blades find the angle of rotation the maps one blade on to the adjacent blade

A rotation of 72 degrees will map one blade of ceiling fan to its adjacent blade.

Step-by-step explanation:

We are told that a ceiling fan has 5 equally spaced blades. It will work as a regular pentagon.

We can find angle of rotation to map one blade on adjacent blade dividing 360 by 5 as sum of angles of regular pentagon equals to 360 degrees.

Upon dividing 360 by 5 we will get,

Therefore, a rotation of 72 degrees will map one blade of ceiling fan to its adjacent blade.    

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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