It can be observed that
Radius (r) of cylindrical part = Radius (r) of hemispherical part = 2.8/2 = 1.4 cm
Length of each hemispherical part = Radius of hemispherical part = 1.4 cm
Length (h) of cylindrical part = 5 − 2 × Length of hemispherical part
= 5 − 2 × 1.4 = 2.2 cm
Volume of one gulab jamun = Vol. of cylindrical part + 2 × Vol. of hemispherical part
Volume of 45 gulab jamuns =45 x 25.05 = 1,127.25 cm3
Volume of sugar syrup = 30% of volume
= 30/100 x1127.25
= 338.17 cm3
= 338 cm3