This figure of this net is called
pyramid
It has 5 faces.

The total surface area is
because ???

Hint: Area of a triangle =bh/2,
What are the base and height of
each of the triangles?

The surface area of the entire pyramid is 40 square units.

The triangles have base lengths of 4 units and heights of 3 units.

Step-by-step explanation:

Step 1:

To calculate the surface area of the pyramid, we must calculate the areas of all the 5 sides.

We divide the pyramid into 1 square and 4 triangles, find the areas individually and then sum them all up to calculate the surface area of the entire pyramid.

Step 2:

There are four triangles with base lengths of 4 units and heights of 3 units. To calculate a triangle's area we multiply with the product of the base length and it's height.

The area of 1 triangle square units.

The area of 4 such triangles square units.

Step 3:

The area of a square is the square of its side length.

The square has a side length of 4 units.

The area of the square base square units.

The surface area of the entire pyramid is the sum of the areas of the 4 triangles and the square.

The surface area of the entire pyramid square units.

The surface area is 40 square units.

2 & 7

step-by-step explanation:

he climbs 300 ft/hr at a constant rate. the peak is at 1,500 ft.

when going up, he reaches 600 ft in 2 hours. remember, that he is going in a constant rate. divide 600 with 300:

600/300 = 2

assuming that he takes the same route back (meaning that it's a 1500 ft route back, you can solve.

note also that you are solving when he gets back to 600 ft after he reaches the peak.

first, find the amount of hours it takes to get up the peak. divide the total amount (1500), with the ft/her (300) to get the amount of hours (x):

1500/300 = x

x = 5

it takes jamie 5 hours to get up. now, he is returning down, and reaches 600 (his current destination). remember that he climbs at a constant 300 ft/hr. divide 600 with 300:

600/300 = x

x = 2

now add the two numbers together.

x = 5 + 2 = 7

jamie takes 7 hours to go up the mountain and reach his current position when descending.

(total amount/constant rate) = (time).

remember that it is a constant rate, so in total, when he gets back down the mountain, it will take the same amount of time as when he goes up. the total amount for the round trip is: 5 + 5 = 10.

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