Question

Calculate the length of the boundary and the area of the shaded region in the
Vollowing diagrams. All measurements are in centimetres.
(i) Unshaded part is a semicircle
(ii) Four semicircles on a square.
10​

Answer 1

Answer:

Step-by-step explanation:

Third line will be  

=(28) sq  +4×  1/2  ×72sq

=784+308

=1092 cm  sq

.