Pg 108-110
Question 3,9,11
3. Walter walks across a rectangular field in a diagonal line. Maria walks around two sides of the field. They meet at the opposite corner. Express your answer to the nearest metre.
A) How far did Maria walk?
B) How far did Walter walk?
C) Who walked further? By how much?
A) Maria walked 420 Km.
B) Walter walked 323 Km.
C) Maria had walked more further by 97m.
9. A checkerboard is made of 64 small squares that each have a dimension of 3cm * 3cm. The 64 small squares are arranged in eight rows of eight.
A) What is the length of th diagonal of small square? Give your answer to the nearest tenth of a centimetre.
B) What is the total length of the diagonal of the board? Give your answer to the nearedt centimetre.
A) a square + b square = c square
3 square + 3 square = c square
9+9=18
c square = 18
c = 4.2 cm square
B) 32cm
11. Johan has a 300-cm ladder that he leans up against a wall. The safety sticker on the side of the ladder shows that the bottom must be placed between 70 cm and 110 cm away from the wall. What are the minimum distance and maximum distance up the wall that the ladder can reach? Give your answers to the nearest tenth of a centimetre.
The maximum is 291.7 cm, and the minimum is 279 cm.
