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x - razy
p = 4 # r2
p1 = 4x#x(3)2
p1 = 36#
p2 = 4x#x(4)2
p2 = 64#
36# + 64# = 100 #
4 # r2 = 100# / : 4
#r2 = 25# / :#
r2 = 25
r = 5
v1=2,25pi cm3
v2=3/4*pi*4
v2=3,pi cm3
vc=5,25pi cm3
5,25pi=3/4*pi*r3
5,25=3/4*r3 /3/4
26=r3
pierwiastek 3 stopnia z 26=r
V₂=4/3π×4³=4/3×64π=256/3π=85i1/3π cm³
V₃-objętość otrzymanej kuli ; V₃=V₁+V₂=(36π+85i1/3π)cm³
V₃=4/3π×r₃³; 108/3π+256/3π=4/3π×r₃³/×3 ; 108π+256π=4π×r₃³;
364π=4π×r₃³/:4π ; r₃³=91 ; r₃=³√91=cm