A rectangular pyramid has a height of 10 meters. The base measures 8 meters in length and 12 meters in width. Two different tria
ngular cross sections are formed through the vertex and perpendicular to the base. What is the difference in the areas of the cross sections?
1 answer:
Step 1
find the a<span>rea of the first cross section
area1=b1*h/2
b1=8 m
h=10 m
area1=6*10/2------> 30 m</span>²
step 2
find the area of the second cross section
area 2=b2*h/2
b2=12 m
h=10 m
area1=12*10/2------> 60 m²
step 3
find <span>the difference in the areas of the cross sections
</span>difference=60-30------> 30 m²
the answer is
30 m²
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