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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