Question 918616
A channel of uniform semi circular cross section area has an internal radius of 7 cm and its 2 cm in length find the volume in cm 3 of water it can contain when full.... 
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From the description, looks like half a cylinder with a radius of 7 and a height of 2
V = {{{1/2}}} * {{{pi*7^2*2}}}
V = 153.9 cu/cm