Question

what is answer of this question ​

Answer 1

Step-by-step explanation:

Area of square OABC= 15 *15=225 cm^2

OA= \sqrt{15 { }^{2} + 15 {}^{2} }

OA=21.21cm

Area of OPBQ= 3.14×21.21×21.21/4

=353.25cm^2

Area of shaded portion=353.25-225

=128.25cm^2