Rectangular 46201

Calculate the pyramid's surface area with a rectangular base measuring 9cm, 4cm, and 6cm high.

Correct answer:

S =  122.921 cm2

Step-by-step explanation:

h=6 cm a=9 cm b=4 cm  h1=h2+(b/2)2=62+(4/2)2=2 10 cm6.3246 cm h2=h2+(a/2)2=62+(9/2)2=215=7.5 cm  S1=2a h1=29 6.3246=9 10 cm228.4605 cm2 S2=2b h2=24 215=15 cm2  S3=a b=9 4=36 cm2 S=2 S1+2 S2+S3=2 28.4605+2 15+36=122.921 cm2



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