Math year 7

[blue][/blue] i need help on a question please help




on a farm there were some hens and sheep. Altogether there were 8 head and 22 feet, how many hens were there?

Math Year 7 answer

There are five hens.

There are 5 hens and 3 sheep. I did this by saying 4x4 sheep is 16, then added four hens, which made 24, so if I took away a sheep, and added a hen, I would have 22 feet!'

Re : Math year 7

The area of a square garden is 64cm2. about how long is the circumference of the largest possible circular lawn in the middle garden?

Re : Math year 7

The diameter of the largest circle is from one side of the square to the other. Since the sides of the square are 8cm long, then that means a diameter of 8cm. Therefore a radius of 4cm.

Circumference is 2pir so that means 2 x 4 = 8 x pi, so that's 8 x 3.14

Overall that means a circumference of approximately 25cm2.