אאאא אאאא ٤ - ٦٤ - אאאאWאא אאאאאWאא Wאא Wאאא Eאא Jא JאאFאאא אאאאא Eא Jא Jאא JאFאאאא אאאאאאא • • • • K٪٨٠אאWאאא Wאא אאא ١١٦ אאאא א אאאא אאK١ Wאאאא K• א Kא• א אאK١{١ אא ،אא Wא KEFא Ea Kא Eb Kאא אEc אאK١{١{١ Wאאא D A P = 2 EF = 2( AB + AD ) F C H B A = DH × CB Wא A = אא × א or A = DF × AB Kאאא • Kאאאאאאאא• א Kאאאאאאא• א אאא ١١٦ אאאא א אאK 8 cm, 14cm אW١ K 5cm אא Wא P = 2 EFWאא P = 2(8 + 14) = 44 cm WאאאאאאWא A = א × א = 5 × 14 = 70 cm 2 D אK٢{١{١ A Kאא C • א ow o l B = 2( AB + AD ) P = 2 [ (w) אH (l ) ]א • א = AB × AD A = (w) א × (l ) א KאK11cm 17 cm W٢ P = 2 [ (w) אH (l ) ]א = 2(11 + 17) = 56 cm A = (w) א × (l ) א = 11 × 17 = 187 cm 2 Wא Wא Wא KאK16 א، 320 cm 2 W٣ Wא (l ) א = א ( A) ÷ (w) א l = 320 = 20cm 16 (P) א P = 2 [ (w) א+ (l ) = א2(16 + 20) = 72 cm ] אאא ١١٦ אאאא א KאKK 7 cm W٤ Wא L = 3 × 7 = 21cm W (L) אא P = 2 [ (w) אH (l ) ]א = 2(7 + 21) = 56 cm A = (w) א × (l ) א = 7 × 21 = 147 cm 2 Wא Wא אK٣{١{١ o P = 4 × (l ) א = 4 l o W (P) א • A = (l ) × א (l ) = אl 2 W ( A) א • o אK 9cm W٥ K l Wא o P = 4 × (l ) א = 4 l = 4 × 9 = 36 cm Wא A = (l ) × א (l ) = אl 2 = 9 2 = 81cm 2 Wא Kא 48 cm W٦ Wא l = P ÷ 4 = 48 ÷ 4 = 12cm Wא A = l 2 = (12) 2 = 144 cm 2 Wא Kא 49cm 2 W٧ Wא l = A = 49 = 7 cm Wא P = 4 × (l ) א = 4 l = 4 × 7 = 28 cm A • o l • D o H C אK٤{١{١ Wאאא B o o Wא Kא Ea Kא Eb אאא ١١٦ אאאא א Kא Ec Kאאאא،אאא Ed P = 4 × (l ) א א • A = DC × AH א • א × א = א 1 2 אאא A = Eאא × אאF אK 5cm א13cm W٨ K P = 4 × (l ) א = 4 l = 4 × 13 = 52 cm A = א × א = 13 × 6 = 78 cm 2 Wא Wא Wא אאא 4m, 7 m W٩ אא،15 1 2 14 × 15 = 210 1 2 A = Eאא × אאF = (4 × 7) = 14 m 2 א Wא o אK٥{١{١ א o Wא Kאאא • • P = אאWא • א • A = א × אא A = א × א W Kאאאא אאא ١١٦ אאאא א K אK11cm א17cm אW١٠ A = א × א = 17 × 11 = 187cm 2 Wא אK٢{١ 180o אאאא Wא A Kא Ea Kא Eb o Kא Ec o Kאאא אEd אאאא C B H ∠CAB אא CB א A א א • P = AB + BC + CA א 1 2 א • Wאא 1 2 A = × א × אא = × CB × AH K 8 cm א12 cm אאW١١ 1 2 Wא 1 2 A = × א × אא = × 12 × 8 = 48 cm 2 Wא K 8 cm אאאK 7cm אW١٢ K Wא P = 3 × 7 = 21cm Wא A= 7×8 = 28 cm 2 Wא 2 אאא אאאא ١١٦ א אאK٣{١ אאא،אאא אאאא אאאאאאאWא K אאאאאאאאאWאא J אאאאאאWאא J אאאאאא J Kאאאאאא J r א d א P = 2πr אא • W r אאא EאאFאא π א 22 ≈ 3,142 7 Wאא • A = πr 2 W r אאא Kא 2.8 m אאW١٣ Wא 2.8 = 1.4 m Wא 2 Wא P = 2πr = 2 × 3.14 × 1.4 ≈ 8.8 m r = A = πr 2 = 3.14 × (1.4) 2 ≈ 6.2 m 2 Wא א 66 m אאW١٤ Wא r = 66 ÷ 3.14 ≈ 21 m Wא A = πr 2 = 3.14 × (21) 2 ≈ 1385 m 2 Wא אאא ١١٦ אאאא א ؟، 6 cm א15 cm אא E١ אאאא،12 cm אא E٢ K10 cm א ،10 cm א، 50 cm ،אא E٣ ؟12.35 m 2 אא A אK BCDE ، ABCDE אא אE٤ E CD 8 m AC א ABCDE B K 6 m 8m D C 6m א K א אE٥ 5m Kאא 4m 4m 6m 4m Wאא E٦ 2.5cm 5cm 70m 2.5cm 1cm 20m 6cm 4cm 25m 2cm 2cm 4cm 25m 20m 3cm 3cm 40m 4cm אאא ١١٦ אאאא א א אא א א א ، 42 cm א א E٧ K 560 8cm אאאא אE٨ 8cm ، 60 m א E٩ 8cm ؟א، K140 cm אא 220 cm ، E١٠ Wאאאאא E١١ ؟؟א 6cm 5cm 4cm 1cm 3cm ،א א ، 27 m א E١٢ K127 cm אא، 27 m , 39m א،א E١٣ ؟ 31.4 cm ،אא E١٤ אאאK 81cm 2 א E١٥ K12 m 17 m אא،א E١٦ ؟אאאK10 m ؟אאא Kא Kא אאא ١١٦ אאאא א אאאK٢ KאאאאאWא• א אאאWא• א Kא אאWEאFא• א א א א א א Kא KאאאאאWא • אאK١{٢ א، Kאאא K h א w א، l אWאא Wאאא• א A = 2(l × w + l × h + w × h) V = l × w × h אא • h K 7cm, 9cm, 11cm אאW١٥ א w א l Kאא Wא w = 7, l = 9, h = 11 א Wאא A = 2(l × w + l × h + w × h) = 2(9 × 7 + 9 × 11 + 7 × 11) = 2(63 + 99 + 77) = 478 cm 2 Wא V = l × w × h = 9 × 7 × 11 = 693 cm3 אK٢{٢ ، Kאא l אאא אאאא ١١٦ א l EF אא A1 = 4l 2 א • A2 = 6l 2 א • V = l 3 W אאאK 7cm אW١٦ K Wא A1 = 4l 2 = 4(7) 2 = 196 cm 2 Wאא A2 = 6l 2 = 6(7) 2 = 294 cm 2 Wאא V = l 3 = 7 3 = 343 cm 3 Wא אאK٣{٢ Kאא Kאאאאא Kאאאאאאאאא אא• א W h א r אאאא A = 2πr 2 + 2πrh = 2πr (r + h) אא • v = πr 2 h W r אאא אK11cm א 9cm אW١٧ K Wא A = 2πr (r + h) = 2 × 3.14 × 9 × (9 + 11) = 1130.97 cm 2 Wאאא v = πr 2 h = 3.14 × (9) 2 × 11 = 2797.74 cm 3 Wאא אאא ١١٦ אאאא א אK٤{٢ א، r אא Kאאאא א• א W h א r אאא 2 3 Al = πrh א• א W h א r אאא h 2 3 AT = πrh + πr 2 r Wא • h א r אא W 1 3 V = πr 2 h א h = 11cm א r = 14 cm אW١٨ Kאא 2 3 Wא 2 3 Al = πrh = × 3.14 × 14 × 11 = 322.38 cm 2 Wאא Wאא AT = πrh + πr 2 = πr ⎛⎜ h + r ⎞⎟ = 3.14 × 14 × ⎛⎜ × 11 + 14 ⎞⎟ = 43.96 × 21.34 = 937.81cm 2 2 3 2 ⎝3 2 ⎝3 ⎠ ⎠ 1 1 V = πr 2 h = × 3.14 × (14) 2 × 11 = 2256.61cm3 3 3 Wא אK٥{٢ • אאא Kאאאאא אאא ١١٦ אאאא א א• א A = 4πr 2 W r אא א • 4 3 V = π r 3 W r אא r אK17 cm W١٩ Kא Wא Wאא A = 4πr 2 = 4 × 3.14 × 17 2 = 3631.68 cm 2 A = 4 πr 3 = 4 × 3.14 × (17) 3 = 2.57953cm3 3 3 Wא אאא ١١٦ אאאא א K 8 m א،13 m ،17 m ،אא E١ ؟؟אא ،אא،، 850cm 3 ، E٢ אK11cm ،13 cm ،אא ؟אא א، 25 cm 84 cm ،א E٣ ؟אאK،אא، 5 cm ، א 9 cm א 19 cm E٤ KאK13 cm אא אK 27 cm א E٥ 2 א13 m א 17 א13 cm אא אE٦ ؟א K 7 cm א א Kא אא E٧ K12 cm אאאא C2 אא א K C1 , C2 א E٨ V1 K C1 אא h אא C1 א C2 אאאאKא V3 C2 אא V2 C1 אא KV2 = V1 + V3 א h C1 C2
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