Answers

2015-12-20T12:41:13+05:30
Area of semi circle=π r²/2
=>308=π r²/2
=>308*2/22/7=r²
=>r²=196
=>r=14
we know that,
perimeter of semicircle=π r+2r
                                     =22/7*14+2*r
                                     =44+28
                                     = 72m.

hope this helps you.........pls mark as best
0
2015-12-20T12:48:27+05:30
Area of semicircular region = 308 square cm.
to find out the area of semi circular path = r² /2 = 308
r² = 616/
∴ r = 14 cm

perimeter =   \pi r + 2r
                  = 22/7*14+2*r
                   = 44+28
                      = 72 cm.
∴ the perimeter = 72 cm.
0