How many cubic yards of concrete are required, Mathematics

Assignment Help:

A concrete retaining wall is 120 feet long with ends shaped as given. How many cubic yards of concrete are required to construct the wall?

204_How many cubic yards of concrete are required.png

a. 217.8 yd3

b. 5,880 yd3

c. 653.3 yd3

d. 49 yd3

 

a. To determine how many cubic yards of concrete are required to construct the wall, we must evaluate the volume of the wall. The volume of the wall is determine by ?nding the surface area of the end and multiplying it by the length of the wall, 120 ft. The surface area of the wall is found by dividing it into three regions, evaluting each region's area, and adding them together. The regions are labeled A, B, and C. To determine the area of region A, multiply the length (3) times the height (10) for an area of 30 ft2. To evaluate the area of region B, multiply the length (5) times the height (3) for an area of 15 ft2. To evaluate the area of region C, multiply 1 times
the base (2) times the height (4) for an area of 4 ft2. The surface area of the end is 30 ft2 + 15 ft2 + 4 ft2 or 49 ft2. Multiply 49 ft2 by the length of the wall 120 ft; 5,880 ft3 is the volume of the wall. The question, however, asks for the answer in cubic yards. To convert cubic feet to cubic yards, divide 5,880 ft3 by 27 ft3, the number of cubic feet in one cubic yard, which equals 217.8 yd3. If you select b, you did not convert to yd3. If you select c, the conversion to cubic yards was incorrect. You divided 5,880 by 9 rather than 27. If you select d, you found the area of the end of the wall and not the volume of the wall.


Related Discussions:- How many cubic yards of concrete are required

Divison, what is 24 diveded by 3

what is 24 diveded by 3

Integration and differentiation, Integration and Differentiation Diffe...

Integration and Differentiation Differentiation deals along with the determination of the rates of change of business activities or merely the process of finding the derivativ

Math, could you help me get bater at math

could you help me get bater at math

Area related to circle, If ABCD isaa square of side 6 cm find area of shad...

If ABCD isaa square of side 6 cm find area of shaded region

Polynomials in two variables, Polynomials in two variables Let's take a...

Polynomials in two variables Let's take a look at polynomials in two variables.  Polynomials in two variables are algebraic expressions containing terms in the form ax n y m

Differences of squares and other even powers, Differences of Squares (and o...

Differences of Squares (and other even powers) ? A square monomial is a monomial which is the square of another monomial. Here are some examples: 25 is the square of 5 x 2 i

Calculate the total surface area which is exposed , A golf ball has a diame...

A golf ball has a diameter equal to 4.1cm. Its surface has 150 dimples each of radius 2mm. Calculate the total surface area which is exposed to the surroundings assuming that the d

Work Word Problems, Data entry is performed in 2-person teams. Each 2-perso...

Data entry is performed in 2-person teams. Each 2-person team can enter 520 surveys per day. A selection of 7540 surveys must be entered by day''s end. How many total employees, wo

Complex numbers, find the modulus Z=(2-i)(5+i12)/(1+i2)^3

find the modulus Z=(2-i)(5+i12)/(1+i2)^3

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd