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AB/22=40/90
AB= 88/9 cm
b) 90/360..14^2
= 1/4 * 22/7 * 14 *14
= 154 cm^2
c) 154 - 1/2*sin90*14*14
Sin 90 = 1
= 154 - 7*14
= 154 -98
= 56 cm^2