MCQ
Mark $(\checkmark)$ against the correct answer.$\triangle\text{ABC}$ is right angled at A. If AB = 24cm and AC = 7cm, then BC = ?
- A31 cm .
- B17 cm .
- ✓25 cm .
- D28 cm .
✓
Answer
Correct option: C.
25 cm .
25 cm .
$\triangle\text{ABC,}$ is a right angled, $\angle\text{A}=90^\circ$
$AB=24 cm, AC=7 cm$
but $B C^2=A B^2+A C^2$
$\Rightarrow B C=(24)^2+(7)^2=576+49=625=(25)^2$
$B C=25 cm .$
$\triangle\text{ABC,}$ is a right angled, $\angle\text{A}=90^\circ$
$AB=24 cm, AC=7 cm$
but $B C^2=A B^2+A C^2$
$\Rightarrow B C=(24)^2+(7)^2=576+49=625=(25)^2$
$B C=25 cm .$
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