Maths-
General
Easy
Question
Find the total surface area of a triangular prism whose three sides are 12cm , 13cm ,13cm ; base is 10 cm; length is 20cm; height is 22 cm :
- 810 sq cm
- 980 sq cm
- 830 sq cm
- 207 sq cm
The correct answer is: 980 sq cm
Total surface area of a triangular prism : (s1 + s2 + s3 ) *l + bh
: (12 + 13 +13 ) * 20 + 10*22
: (38) * 20 + 220
: 760 + 220
:980 sq cm
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