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The length of each equal side of an isos...

The length of each equal side of an isosceles triangle is 15 cm and the included angle between those two sides is `90^@`. Find the area of the triangle.
एक समद्विबाहु त्रिभुज की प्रत्येक बराबर भुजा की लंबाई 15 सेमी है तथा उनके बीच का कोण `90^@` है| इस त्रिभुज का क्षेत्रफल ज्ञात करें |

A

`225/2 cm^2`

B

`225 cm^2`

C

`255/2 cm^2`

D

`125/2 cm^2`

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