Question

please answer this ​

Answer 1

Answer:

94.5sq cm

.. hope this helps you ..

Answer 2

Answer:

since DPC and APB are semicircle with same radius 21/2

so we can join both the semicircles to make it a single whole circle

then finding perimeter of the circle will be easy

so,

perimeter =2pi R

=2× 22/7×21/2

=66 cm²

now ,

lets calculate area of square,

area= side× side= 21 × 21

=441 cm²

now ,

area of shaded region is ,

=( 441 -66) cm²

=375 cm²

hence the area of shaded region is 375 cm²

HOPE IT WILL HELP