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Vladimir79 [104]
3 years ago
6

The surface area of a regular pyramid with a square base which has a slant height of five units and base side lengths of nine un

its is:
Mathematics
1 answer:
lord [1]3 years ago
4 0

Answer:

171 sq units.

Step-by-step explanation:

Since you don't specify you want a the side surface area only, we'll calculate both.

First, the base...

We have a square with a side of 9 units.

Area of the base is then 9 x 9 = 81 sq units.

For the sides, we have 4 triangles with a base of 9 and a height of 5 units.

The area of a triangle is calculated with A = (b * h)/2

So, each of the sides of the pyramid has an area of:

A = (9 * 5) / 2 = 22.5 sq units

There are four sides, so total lateral area: 4 * 22.5 = 90 sq units.

Total area: 81 + 90 = 171 sq units.

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Jess jogs at a rate of 6 miles per hour. The next time she jogs she increases her speed to a rate of 7 mile per hour. How long w
Arada [10]

Answer:

0.86 hour

Step-by-step explanation:

Jess jogs at a rate of 6 miles per hour.

The next time she jogs she increases her speed to a rate of 7 mile per hour.

The new rate of Jess's jogging is 7 miles per hour

How long will it take her to jog 6 miles?

Hence:

7 miles = 1 hour

6 miles = x hours

Cross Multiply

7 × x = 6 × 1

x = 6/7

x = 0.8571428571 hour

Approximately = 0.86 hour

It will take Jess 0.86 hour to jog for 6 miles

8 0
3 years ago
Jamie lost 27 pounds in 1 year . on avarage how many pounds did jamie lose per month
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3 years ago
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_______is a simple polygon in which each of the interior angels measured less than 180⁰.​
Slav-nsk [51]

Answer:

a convex polygon is a simple polygon in which each of the interior angles measure less than 180-degrees

6 0
3 years ago
Solve for x in the hanger below
Eva8 [605]

Answer:

x=3

Step-by-step explanation:

5 0
2 years ago
Help please! Geometry word problem!
mr Goodwill [35]

By applying <em>reflection</em> theory and constructing a <em>geometric</em> system of two <em>proportional right</em> triangles, the height of the stainless steel globe is approximately 140 ft.

<h3>How to estimate the height of the stainless steel globe</h3>

By physics we know that both the angle of incidence and the angle of reflection are same. Thus, we have a <em>geometric</em> system formed by two <em>proportional right</em> triangles:

5.6 ft / 4 ft = h / 100 ft

h = (5.6 ft × 100 ft) / 4ft

h = 140 ft

By applying <em>reflection</em> theory and constructing a <em>geometric</em> system of two <em>proportional right</em> triangles, the height of the stainless steel globe is approximately 140 ft.

To learn more on geometry: brainly.com/question/16836548

#SPJ1

8 0
2 years ago
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