Work out the area of a triangle of base 7.5m and height 6cm!
and beforehand! ❤️

You're welcome and don't mention it, beforehand.

There's so little to this problem, and it will do you so much
more good to work it out yourself, that I'm just going to
point you in the right direction and give you a little push:

 The area of a triangle is half of the product of its base and height.

                     A  =  (1/2) (base) (height)

I know you know what the base and height are, because
you just told them to US.

             Base = 7.5m  = 750 cm
             Height = 6 cm.

Write those numbers in the formula in place of the words:

                A  =  (1/2) (base) (height)

                A  =  (1/2) (750 cm) (6 cm) .

Do that multiplication, and you've got your area.

Don't forget to keep the units when you multiply,
so that the answer is in units of  cm² .

The answer may be a big number, and you may want to
change it to  meter²  instead of  cm², to make it a smaller
number.

If you do that, remember that

         1 meter = 100 cm

          1 meter² = (1 meter) · (1 meter)

                         =  (100 cm) · (100 cm)

                         =      10,000 cm² 

Best answer that i found on yahoo ok   set :   x= length of 2nd piece in cm  x- 3= length of 1st piece in cm  x-4= length of 3rd piece in cm  then since you know they all came from the 20 cm ribbon you add them together and set them equal to 20x+ x-3 +x-4 = 20  3x - 7= 20  3x= 27  x= 9  the shortest piece is the third piece which is x- 4  x-4  9-4 = 5  the length of the smallest piece is 5 cm.  the other lengths are  9 cm  6 cm