ME=AD/2 KE=BC/2 MK=ME-KE=(AD-BC)/2=(13,7-4,5)/2=9,2/2=4,6
Ответ прикреплен во вложении
<span><span><span>l2</span>=<span><span>R2</span>+<span>H2</span></span></span> (l-образующая (2-квадраты)
l2=82+62=64+36=100
l = 10
</span>
<span>S= пи*l*r=3.14*10*8=251,2</span>
403 500 * 80 = 32 280 000