What is the value of p for the following triangular prism?

4cm + 2.8cm +4cm = 10.8 cm

Step-by-step explanation:

Formula Perimeter is A+B+C

First, you need to change the 28 mm to cm (move decimal once space to the left making 28mm to 2.8 cm)  

Next, add all your sides that are now in the same format of cm

4 +2.8 +4=10.8 cm

yes

step-by-step explanation:

so of course you want to start by plugging the 5 in which goes to 7(5)+3(5)=50 because 7*5=35 and 3*5=15 and then add them together, then plug in the 5 to the other equation as well 9(5)+5=50 because 9*5= 45 and then add 5 and so yes they are equivalent.