Quadrilateral 44471

The regular quadrilateral pyramid has a surface of 260 cm2 and a side wall area of 40 cm2. Calculate the length of the base edge and the wall height.

Correct answer:

a =  10 cm
h2 =  8 cm

Step-by-step explanation:

S=260 cm2 S1=40 cm2  S=4 S1+P  P=S4 S1=2604 40=100 cm2  P=a2  a=P=100=10 cm
S1=2a h2  h2=2 S1/a=2 40/10=8 cm



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