Gabriel wants to send a parcel to Italy.
His parcel is a cuboid with dimensions 10 cm, 20cm and 40 cm.
20 cm
10 cm
40 cm
to scale
He looks at the prices of two companies,
WeDeliver and GoParcels.
Not drawn
WeDeliver
Total cost: Sum, in cm, of the 3 dimensions * £0.80 Find the cost of sending the
parcel with each company.
Give each of your answers
GoParcels
Total cost: Total area, in cm, of all 6 faces * £0.02 in pounds (2).

WeDeliver = 640£

GoParcels=  400£

Step-by-step explanation:

The cost for WeDeliver service is calculated based on volume. The parcel is cuboid, so the volume will be:

length x wide x height = 20cm * 10cm  * 40cm= 800

The cost is £0.80 every , then the total cost will be: 800 * £0.80/ = 640£

The cost for GoParcels service is calculated based on the area of the parcel. Using the cuboid area formula, the area of the parcel will be:

2(length x wide) + 2(length x height) + 2(wide x height)=

2(20cm*10cm) + 2(10cm * 40cm) + 2(10cm*40cm)= 2000 c

The cost is  £0.02 every cm^3, then the total cost will be:2000 *  £0.02/ = 400£

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.

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