Find the sum of 4.702,4.2,6.02and 1.27.
Addition of decimals
4.702+4.2+6.02+1.27=4.702+4.200+6.020+1.270
=16.192
Hence, the value is 16.192
Find the sum of the lengths of the bases trapezium whose area is 4.2 m2 and whose height is 280 cm.