A community for students.
Here's the question you clicked on:
 0 viewing
Yasminelove1
 2 years ago
What is the approximate perimeter of the composite figure shown? Use three point one four for pi.
Yasminelove1
 2 years ago
What is the approximate perimeter of the composite figure shown? Use three point one four for pi.

This Question is Closed

ash2326
 2 years ago
Best ResponseYou've already chosen the best response.2Can you find the area of right triangle with base 5 mi and height 5 mi?

ash2326
 2 years ago
Best ResponseYou've already chosen the best response.2Do you know the formula for area of right triangle and\or circle?

Yasminelove1
 2 years ago
Best ResponseYou've already chosen the best response.1A=1/2xbxh or A=bxh/2

Yasminelove1
 2 years ago
Best ResponseYou've already chosen the best response.1Circle Area = π × r2 Circumference = 2 × π × r r = radius

ash2326
 2 years ago
Best ResponseYou've already chosen the best response.2Good, you're right here for the triangle b=5 mi h=5 mi \[\frac 1 2 b\times h\] Just plugin the values, you'll get the area of triangle

Yasminelove1
 2 years ago
Best ResponseYou've already chosen the best response.1wat do you mean by that

ash2326
 2 years ago
Best ResponseYou've already chosen the best response.2put b=5 and h=5, then solve it to find the area of triangle

Yasminelove1
 2 years ago
Best ResponseYou've already chosen the best response.1so ur saying 5x5x3.14

ash2326
 2 years ago
Best ResponseYou've already chosen the best response.2Nope, \[\text{Area of figure}=\text{Area of triangle+ Area of circle}\] \[\text{Area of triangle}=\frac 1 2 \times 5 \times 5\ mi^2\]

Yasminelove1
 2 years ago
Best ResponseYou've already chosen the best response.1oh ok i get 12 1/2 tho

ash2326
 2 years ago
Best ResponseYou've already chosen the best response.2Yes, you're right. Now we need to find the area of semi circle, It's diameter is 7 mi Can you find the area?

Yasminelove1
 2 years ago
Best ResponseYou've already chosen the best response.1A semicircle is half of a circle and the area of a circle of radius r is pi r2. We know that the area of a circle is: area of a circle = pi r2 A semicircle is half of a circle. Therefore the area of a semicircle will be: area of a semicircle = 1/2 pi r2 We know that the radius is 9ft. Pi is approximately 3.14 or 22/7. Now you just have to plug in the numbers and you will find the area!

ash2326
 2 years ago
Best ResponseYou've already chosen the best response.2What's the radius here?

Yasminelove1
 2 years ago
Best ResponseYou've already chosen the best response.1First, let's look at the 2 dimensional region (base of solid) Each crosssection perpendicular to the xaxis is a "strip" of length e^x  0 = e^x Now we can look at 3 dimensional solid Each crosssection perpendicular to the xaxis is a semicircle with diameter = e^x So each crosssection has area = 1/2 (π r²) = 1/2 π (e^x/2)² = π/8 * e^(2x) Each very thin cross section of width dx has volume = π/8 * e^(2x) dx Integrating from x = 1 to x = 1, we get: Volume = ∫₋₁¹ π/8 * e^(2x) dx . . . . . . = π/16 * e^(2x) ₋₁¹ . . . . . . = π/16 (e^(2)  e^(2)) . . . . . . = 1.4242647516

ash2326
 2 years ago
Best ResponseYou've already chosen the best response.2From where are you posting this??? It's not relevant here

amistre64
 2 years ago
Best ResponseYou've already chosen the best response.0@preetha we need to get shadow to clean up the database .....

amistre64
 2 years ago
Best ResponseYou've already chosen the best response.0@shadowfiend might need your assistance in cleaning up some database material

amistre64
 2 years ago
Best ResponseYou've already chosen the best response.0please check the users profile page for some rather inappropriate content.

amistre64
 2 years ago
Best ResponseYou've already chosen the best response.0they also seem to have a habit of editing the content out of their questions :/
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.