Find the surface area of the following prism.
IMG_7864.jpg
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Answer:
122cm²
Step-by-step explanation:
Given that
measurements are:
3cm, 4cm, 5cm, 7cm
height (h) = 4cm
perimeter of base (p) :-
= 2×( l+b) ( base = rectangle )
= 2× ( 7+3 )
= 2 × ( 10 )
= 20cm
area of base (B) :-
= l×b
= 7×3
= 21cm
formula to find surface area = ph+2B
= (20×4) + (2×21)
= (80) + (42)
= 122cm²
therefore the surface area of given figure is :- 122cm²
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