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1232= ⅓×22/7×7×7×t
1232= 51,33 t
t= 1232÷51,33
t= 24 cm
s²=t²+r²
s²= 24²+7²
s²= 576+49
s=√625
s= 25 cm
L. Sk= πrs
22/7×7×25
= 550 cm²