Changes
From Karnataka Open Educational Resources
229 bytes added
, 11:30, 11 July 2014
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| The altitude of a triangle is 6cm greter than its base. If its area is 108cmsq .Find its base.<br> | | The altitude of a triangle is 6cm greter than its base. If its area is 108cmsq .Find its base.<br> |
| Statement: Solving problem based on quadratic equations.<br> | | Statement: Solving problem based on quadratic equations.<br> |
− | *Interpretation retation of the problem:<br> * Converting data in to eqn.<br> *Knowledge about area of a triangle.<br>*knowledge of the formula of area of triangle.<br>*Methods of finding the roots of the eqn.<br> | + | *Interpretation of the problem:<br> * Converting data in to eqn.<br> *Knowledge about area of a triangle.<br>*knowledge of the formula of area of triangle.<br>*Methods of finding the roots of the eqn.<br> *Methods of finding the roots of the |
| + | *Different approches to solve the problem: <br>*Factorisation |
| + | *Using formula |
| + | *using graph |
| + | *Concept used:Forming the eqn. 216=x(x+6) |
| + | 216=x2+6x<br> |
| + | x2 +6x -216=0<br> |
| + | Substitution: x 2 +18x-12x -216=0 |