find the shaded area correct to 1 d.p (use 3.14 for π)
Answers
refer to image for answer
hope this helps...
Heya mate... let's do it
--------------------------------------------------------------------------------------------------------------
step 1) find the area of both inner and outer circle
--------------------------------------------------------------------------------------------------------------
1st circle's area = ?
diameter = 8 cm
radius = diameter/2
= 8/2
= 4
Area of a circle = πr^2
= 3.14 x 4 x 4
= 50.24
Hence, the area of the circle is 50.24 cm^2
area of 2nd circle = ?
radius = diameter/2 = 10/2 = 5cm
area of circle = πr^2
so area = 22/7*5*5
area = 550/7 = 78.571428cm^2
--------------------------------------------------------------------------------------------------------------
step 2) subtract both the areas and u will get the shadded part's area
--------------------------------------------------------------------------------------------------------------
= 78.57 - 54.24
= 28.33 is the area of the shaded part
--------------------------------------------------------------------------------------------------------------
have a great day ahead bro...