body{margin:0;} noscript{z-index: 10000; position: fixed; display: block; height: 100%; width: 100%; background: #fff;} noscript .fa{font-size: 40px; display:block; color: #daa520;} noscript div{margin-top: 6%; padding-left: 20px; padding-right: 20px; text-align: center;} ! You must have JavaScript enabled to use this site.

McGraw Hill Integrated II, 2012

MH

McGraw Hill Integrated II, 2012 View details

7. Scale Drawings and Models

Continue to next subchapter

Exercise 19 Page 604

Create a proportion using the scale factor.

≈329 feet

Practice makes perfect

We are given that the Eiffel Tower in Paris, France, is 986 feet tall and that the scale factor of a replica to the actual tower is approximately 1:3. To find the height of the replica, h, we will create a proportion using the given information. h/986= 1/3 Let's solve the above proportion using cross multiplication.

h/986=1/3

Cross multiply

h*3=986*1

Multiply

3h=986

.LHS /3.=.RHS /3.

h=328.666...

Round to nearest integer

h≈ 329

The height of the replica is approximately 329 feet.

Subchapter links

Exercises p.602-605