Find the area of triangle having perimeter 32cm. One side of it side is equal to 11cm and difference of the other two is 5cm
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Hello !
32 cm - 11 cm = 21 cm
x + ( x + 5 ) = 21 cm
x + x + 5 = 21 cm
2x + 5 = 21 cm
2x = 21 - 5 = 16 cm
x = 16 ÷ 2 = 8 cm
8 cm + 5 = 13 cm
13 cm + 8 cm + 11 cm = 32 cm
32 cm - 11 cm = 21 cm
x + ( x + 5 ) = 21 cm
x + x + 5 = 21 cm
2x + 5 = 21 cm
2x = 21 - 5 = 16 cm
x = 16 ÷ 2 = 8 cm
8 cm + 5 = 13 cm
13 cm + 8 cm + 11 cm = 32 cm
Hakar:
Good answer !
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