A semi circle of diameter 6cm is cut from rectangle with sides 6cm and 8cm. Calculate the perimeter of the shaded shape correct to 1 decimal place. (My words) Add working steps if possible :)
To find the perimeter you have to add together all the sides given. First find the circumference of the semi-circle which is using the formula (2piR/2) 2*pi*3 / 2 = 3pi “R is radium which is half of the diameter” now we know that the circumference of the semi-circle is 3pi Now the side at which lays the circle is opposite to 8cm side hence it will equal 8cm in total So the side at which the semi-circle lays = 3pi + 2cm remaining (3pi)+2+6+6+8=31.42477796 Now round the answer to 1 d.p
