Mathematics
Grade9
Easy

Question

Find the surface area of the figure. Round your answer to the nearest hundredth.

  1. 576.40 in squared
  2. 1 comma 031.8 in squared
  3. 2 comma 504.70 in squared
  4. 517.3 in squared

hintHint:

The surface area of Pyramid = B space plus space 1 half space cross times space P l space where p is the perimeter of the base , B is area of the base and l is the slant height of the pyramid.

The correct answer is: 576.40 in squared


    Given from diagram, the length of the square base is 11 inch and slant height is 20.7  T h e space p e r i m e t e r space o f space b a s e space equals space 4 space x space 11 space equals space 44
T h e space a r e a space o f space t h e space b a s e space i s space 11 squared space equals space 121
U s e space t h e space s u r f a c e space a r e a space f o r m u l a comma space
S u r f a c e space a r e a space equals space B space plus 1 half space space cross times space P l
S. A space equals space 121 space plus space 1 half space left parenthesis 44 right parenthesis left parenthesis 20.7 right parenthesis space equals space 121 space plus space 455.4
equals 576.40 space i n squared
    Therefore, the surface area of the given figure is 576.40 in squared.

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