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— ACR Sick, Sides does the pean ‘4.2.9 cm in length and tts perimeter ts 17-4 €™ at, n have?, polution —_Let the number of Sides of th, Length of each side ; ¢ polygon be n., - of the polygon = 2.9 em. \, Perimeter of the pol F, MPR, tts per € Polygon = (2.9xn) em., a Perimeter = 17.4, Bye a5 “Sem (given)., Be XR =17.4) 17-4 174, H 9 29, p a the given polygon has 6 sides,, aut: the average of 4.2.7.4 and 8.8., potution Average of the given numbers = (4:2 +7.4+ 8.8), Ry, % aeons, 3 788., HEnee; the average of the igivea ritabere te 6.8!, Maris. EXERCISE 3D, ‘ eee! 10 (i) 32.56 by 10 (iu) 4.38 by 10, {iv) 0.34 by 10 (v) 0.08 by 10 (vi) 0.062 by 10, 2, Divide:, (i) 137.2 by 100 (i) 23.4 by 100 (a) 4.7 by 100, (iv) 0.3 by 100 (v) 0.58 by 100 (vi) 0.02 by 100, 3. Divide:, (i) 1286.5 by 1000 (ii) 354.16 by 1000 (iit) 38.9 by 1000, (iv) 4.6 by 1000 (v) 0.8 by 1000 {vi) 2 by 1000, 4. Divide:, () 12 by 8 (i) 63 by 15 (iit) 47 by 20, (iv) 101 by 25 (v) 31 by 40 (vi) 11 by 16, 5, Divide:, (i) 43.2 by 6 (ii) 60.48 by 12 (iit) 117.6 by 21, (iv) 217.44 by 18 (v) 2.575 by 25 (vi) 6.08 by 8, (vil) 0.765 by 9 (vill) 0.768 by 16 (ix) 0.175 by 25, (x) 0.3322 by 11 (xt) 2.13 by 15 (xil) 6.54 by 12, (dit) 5.52 by 16 So, (xtv) 1.001 by 14 (xv) 0.477 by 18, 6. Divide: o, (i) 16.46 + 20 (it) 403.8 + 30 (iit) 19,2 + 80, (iv) 156.8 + 200 =: (v) 12.8 +500 (vt) 18.08 + 400, fe, by 0.8 ¥,, (it) 0.288 by 0.9, , is (i) 25.395 by 1.5, y) 2.0484 by 0.18 / (v) 0.228 by 0.38 (vi) 0.8085 by 0.35, , 976 by 1.64 (vill) 11.04 by 1.6 (ix) 6.612 by 11.6, , (xl) 148 by 0.074 (xit) 16.578 by 5.4, we (xiv) 204 by 0.17 (xv) 3 by 80