Arectangular pyramid has a height of 10 meters. the base measures 8 meters in length and 12 meters in width. two different triangular cross sections are formed through the vertex and perpendicular to the base. what is the difference in the areas of the cross sections?

The difference in the areas of the cross sections is 20 m².

Area of the first cross section

Base= 8 meters

Height= 10 meters

Area of the triangle = 1/2b×h

Area =1/2× 8×10

Area = 40 m²

Area of the second cross section

Base= 12 meters

Height= 10 meters

Area of the triangle = 1/2b×h

Area =1/2× 12×10

Area = 60 m²

Difference in the areas of the cross sections

Difference= 60 - 40

Difference= 20m²

Inconclusion the difference in the areas of the cross sections is 20 m².

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correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,

can i see the following ?

step-by-step explanation: