Area = pi*r2 = pi*52 = 78.54 sq metres
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The radius IS given, since height of hemisphere = radius of hemisphere!
5m=40/5=/5m=8
5m+2n, n-3m, 7-3n (5m+2n)+(n-3m)+(7-3n)=2m+7
no, it is not but the coefficient of 5m is 5×m
It is simply: 5m+2