Homework Help > CBSE > Class 09 > Mathematics
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if a+b+c = 0
then a^{3} + b^{3 }+ c^{3 }= 3 a b c
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U can try spiral methodThanks (1)

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Means many termsThanks (0)

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I think that it is the axiom that when equal r added to equal than the whole is equal.Thanks (0)

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let no be xy
x+y=12 ....... i
10y+x  10xy = 18
9y  9x = 18...... ii
from i and ii
9(12  x)  9x = 18
108  9x  9x = 18
18x =  90
x=5
y=7
two digit no is 57
check ur answer 5+7=12 , 75  57 = 18 .......... Great , ........... r u happy or overjoyed tell me
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Spelling is differentThanks (0)

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let ABC be a triangle having interior angles of 60^{o} each, their sum = 60+60+60=180
now the exterior angles are 120^{o} each, thei sum = 120+120+120=360^{o}
hence sum of exterior angles of a triagle is 360^{o}
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360°Thanks (0)

Exterior angle of triangle is 360°Thanks (0)

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Side squareThanks (0)

Square is a regular polygon with four sides. It has four right angles and parallel sides.
Area of a square is given by: A = a^{2} where a = length of side
If a square has a base of length 8 inches its area will be 8 × 8= 64 square inchesThanks (2)

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4:1Thanks (2)

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Mid point theorem states that the line segment connecting the midpoints of two sides of a triangle is parallel to the third side and is congruent to one half of the third side.
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By semicircle method
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By spiral methodThanks (0)