1.

20. In a potato race, a bucket is placed at the starting point, which is 5 m fand the other potatoes are placed 3 m apart in a straight line. There aline (see Fig. 5.6)firpotatoS3 m:

Answer»

A1=2x5=10

A2=2x(5+3)=16

A3=2x(5+3+3)=22

S10=10/2(2x10+(10-1)6)

=5(20+9x6)

=5x(20+54)

=5x74

S10=370



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