Question

answer me fast as math full

Answer 1

given that radius of semicircle is equal to the side of square..
and perimeter of semicircle is πr, where r is radius of semicircle ..
then 3.14×7.51
23.58
none of these

Answer 2

Answer:

Option (b) 38.62

Step-by-step explanation:

Here given that

Radius of semicircle = side of the square

Radius of semicircle = 7.51 cm

Diameter of Semicircle = 2 × 7.51     [ ∵ Diameter = 2(Radius) ]

                                      = 15.02 cm    

Now, we know that perimeter of any shape is total distance of its outer edge

In the given figure

Perimeter of Semicircle = Length of Arc + Diameter

                                         = 23.6 cm + 15.02 cm

                                         = 38.62 cm

∴ Option (b) is correct