1²×3.14 =3.14 2²×3.14 =12.56 3²×3.14 =28.26 4²×3.14 =50.24 5²×3.14= 78.5 6²×3.14 =113.04 7²×3.14= 153.86 8²×3.14 =200.96 9²×3.14 =254.34 10²×3.14 =314 11²×3.14 =379.94 12²×3.14 =452.16 13²×3.14 =530.66 14²×3.14=615.44 15²×3.14=706.5 16²×3.14=803.84 17²×3.14=907.46 18²×3.14=1017.36 19²×3.14=1133.54 20²×3.14=1256 21²×3.14=1384.74 22²×3.14=1519.76 23²×3.14=1661.06 24²×3.14=1808.64 25²×3.14=1962.5 26²×3.14=2122.64 27²×3.14=2289.06 28²×3.14=2461.76 29²×3.14=2640.74 30²×3.14 =2826 31²×3.14=3017.54 32²×3.14=3215.36 33²×3.14 =3419.46 34²×3.14 =3629.84 35²×3.14 =3846.5 36²×3.14 =4069.44 37²×3.14=4298.66 38²×3.14=4534.16 39²×3.14=4775.94 40²×3.14=5024 41²×3.14=5278.34 42²×3.14 =5538.96 43²×3.14=5805.86 44²×3.14=6079.04 45²×3.14=6358.5 46²×3.14 =6644.24 47²×3.14 =6936.26 48²×3.14=7234.56 49²×3.14 =7539.14 50²×3.14 =7850