In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option.
Some girls are taking prior permission to (1)/ sport a loosely tied plait on the days (2)/ they had washed their hair. (3)/ No error (4)
ΔABC is a right angled triangle, the radius of its circumcircle is 3 cm and the length of its altitude drawn from the opposite vertex to the hypotenuse is 2 cm. Then the area of the triangle is