# Mathematics word problem grade 8

##### New member
Please solve question no. 5 and 7.

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#### Subhotosh Khan

##### Super Moderator
Staff member
Please solve question no. 5 and 7.
Please follow the rules of posting in this forum, as enunciated at:

#### HallsofIvy

##### Elite Member
First do you know that "195 cm" is 1.95 m and "74 cm" is 0.75 m?

Do you know that the area of a rectangle "a" m long and "b" m wide is a*b square meters?

So what is the area of the door in square meters?

Does Li paint both sides of the door? If so what area is that?

That area is equal to 5 times what number?

#### Jomo

##### Elite Member
It really is not nice for you to just say Please solve question no. 5 and 7. You need to do some work and we can tell you where you went wrong and how to get back on track.

#### Koinu_3

##### New member
Please solve question no. 5 and 7.
7.a. Volume = 3.5×3.5×16 = 196 centimeters3
196cm³= 0.1960000L
0.1960000L x 10 = 1.96L

Work it out from there.

#### lookagain

##### Elite Member
7.a. Volume = 3.5×3.5×16 = 196 centimeters3
In your example, this has to be (3.5 cm)(3.5 cm)(16 cm) = 196 cm 3 for the correct units.

Koinu_3 said:
196cm³= 0.1960000L
0.1960000L x 10 = 1.96L
You did not show the cubic centimeter to liter conversion factor before applying it.
From where are you getting the value of 10?

Last edited:

#### Koinu_3

##### New member
In your example, this has to be (3.5 cm)(3.5 cm)(16 cm) = 196 cm 3 for the correct units.

You did not show the cubic centimeter to liter conversion factor before applying it.
From where are you getting the value of 10?
"Eloise works out that she can fill at least 10 large jars with salad dressing."
I dunno.

#### Subhotosh Khan

##### Super Moderator
Staff member
"Eloise works out that she can fill at least 10 large jars with salad dressing."
I dunno.
1 litre = 1000 cubic-centimeter (cc)