//

//areas

a1=2050,a2=8400,a3=16300,a4=24600,a5=31500,


h=5

printf("\n according to trapezoidal rule')

v1=(h/2)*(a1+a5+2*(a2+a3+a4))

printf("\n volume = %0.3f meter cube",v1)

printf("\n according to prismoidal rule')

v2=(h/3)*(a1+a5+4*(a2+a4)+2*(a3))

printf("\n volume = %0.3f meter cube",v2)