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Chapter 11: Q28. (page 427)

How much will it cost to blacktop the driveway shown if blacktopping costs$11.00per square meter?

Short Answer

Expert verified

The cost to blacktop the driveway is $1122.00

Step by step solution

01

Step 1. Given information.

Cost of blacktopping is$11.00 per square meter.

02

Step 2. Concept  Used.

If b is the base of the reactangle and 102鈥�m2=102脳11=$1122.00is the height of the rectangle.

Then, the area of the rectangle isA=b脳h

03

Step 3. Let’s calculate the area of the path.

Total area of the driveway = Area of first part + Area of second part

i.e.

Area of first partlength=(18鈭�12)=6鈥�mwidth=(9鈭�4)=5鈥�mA1=bhA1=6(5)=30鈥夆赌�m2

Area of second partA2=bhA2=4(18)=72鈥夆赌�m2

Now, total area isA1+A2=30+72=102鈥�m2

Cost of blacktopping per meter square =$11.00

Cost of blacktopping is,102鈥�m2=102脳11=$1122.00

Therefore, the cost of blacktopping is$1122.00

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