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The base of a right pyramid is a square ...

The base of a right pyramid is a square of a side 10cm. If its height is 10 cm, then the area (in `cm^2`) of its lateral surface is:
एक पिरामिड का आधार 10 सेमी भुजा वाला वर्ग है। यदि इसकी ऊंचाई 10 सेमी है, तो इसकी पार्श्व सतह का क्षेत्रफल (`सेमी^2` में) है ?

A

100

B

`100(sqrt5+1)`

C

`50 sqrt5`

D

`100 sqrt5`

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