please tell me what is the solution of this question
Answers
radius of the sheet=4cm
area=2πr
=3.14*4^2
=3.14*16
=50.24 cm
radius of the inner circle=3 cm
area=2πr
=2*3^2
=2*9
=18 cm
area of the remaining sheet=area of the first sheet-area of the inner circle=50.24 cm-18 cm
=32.24
pls mark as branliest
Answer:
We have
>> radius when circle is full, lets say r 1 = 4 cm
>>radius when circle is cut out from above one, lets say r 2 = 3 cm
so,
>> remaining area of circle = {area of circle with radius r 1} - {area of circle with radius r 2}
Step-by-step explanation:
hence,
area of circle with radius r 1 = π (r 1)^2
>> 3.14 * 16 = 50.24 cm²
similarly,
area of circle with radius r 2 = π (r 2)^2
>> 3.14 * 9 = 28.26 cm²
hence ,
remaining area = {area of circle with radius r 1} - {area of circle with radius r 2}