Area of Plane Shapes

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Triangle  مثلث
Area = ½b × h
b = base
h = vertical height

 

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Square  مربع
Area = a2
a = length of side

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Rectangle  مستطيل
Area = w × h
w = width
h = height

 

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Parallelogram  متوازي أضلاع
Area = b × h
b = base
h = vertical height

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Trapezoid (US)  شبه منحرف
Trapezium (UK)               
Area = ½(a+b) × h
h = vertical height

 

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Circle  دائرة
Area = πr2
Circumference=2
πr
r = radius

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Ellipse  بيضاوي
Area = πab

 

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Sector  قطاع
Area = ½r2θ
r = radius
θ = angle in radians

مثال:

ما هي مساحة المستطيل؟

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معادلة المساحة:

المساحة = الطول × العرض
A = w × h
w = العرض = 5 cm
h = الطول = 3 cm

تكون المساحة: 

Area = 5 × 3 = 15 cm2

 

Volume of regular shapes  أحجام الأشكال المنتظمة

1- Cuboid (rectangular prism)

متوازي الأسطح

2- Sphere

الكرة

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3- Cylinder

الأسطوانة                                                         

4- Cube

 المكعب                                      

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5- Cone             

المخروط

6- Square based pyramid

هرم مربع القاعدة

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