Question

find the diameter of a semi circle whose area is 100. 48 CM square use π as 3.14​

Answer 1

area of semicircle = πr²/2

=>

πr²/2 = 100.48 cm

=> r² = 64 cm²

=> r = 8 cm

=> d = 2r = 16 cm

Answer 2

using formula ,

πr^2/2=100.48

or r^2/2=(100.48/3.14)

or r^2= 32×2

or r= √64,or r= 8cm

or 2r=D=2×8cm

or D=16cm.