A) 9 cm
B) 18 cm
C) 8 cm
D) 12.5 cm
Correct Answer: B
Solution :
Area of the first triangle \[=\frac{1}{2}\times \]Base \[\times \]Height \[=\frac{1}{2}\times 15\times 12=90\,\,c{{m}^{2}}\] According to the question, Area of the another (second) triangle \[=2\times 90=180\,\,c{{m}^{2}}\] Area of the new triangle \[180\,\,c{{m}^{2}}=\frac{1}{2}\times 20\times \text{Height}\] \[\therefore \] Height \[=\frac{180\times 2}{20}=18\,\,cm\]You need to login to perform this action.
You will be redirected in
3 sec