Question

A gardener marks out a new section of lawn that is supposed to be a rectangle with sides of length 15 cm and 10cm respectively. to check he has marked out a rectangle he measures the length of the diagonal . how long should this be ?

Answer 1

Ok have you ever used Pythagorean theorem before?

Answer 2

I forgot the scale

Answer 3

Hm?
You can solve it by plugging it into the formula c^2=a^2+b^2

Answer 4

do you get how to do this?

Answer 5

c*c=15*15+ 10*10?

Answer 6

Yes that is right! so what is 15*15 and 10*10?

Answer 7

325

Answer 8

exactly so c^2=325, the opposite of square is the square root so you take the square root of both sides

Answer 9

=18?

Answer 10

Yep :)

Answer 11

Thanks, Forgot the formula , has been a while to start the maths again

Answer 12

no problem

Answer 13

simplify 6^2+y^2-x^2+5+x-3y^3 ?

Answer 14

is 5x^2+5+x+y^2 -3y^3 ?

Answer 15

is that right?

Answer 16

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