4. A €1 coin is approximately 2·3 mm thick and a €50 note is approximately 0·15 mm thick. (i)
If you won €1 000 000 and received this sum in €50 notes, how tall would they be if you stacked each note horizontally on top of each other. Give your answer in metres.
(ii) The Spire in Dublin is 121 metres tall. If you won €1 000 000 and received this sum in €1 coins, would the stack of coins be taller than the Spire? Justify your answer.
5. Find the area and perimeter of the following shapes. Give your answer to two decimal places where necessary.
(i) 5 cm 5 cm 7 cm 4 cm
6. Find (a) the perimeter and (b) the area of each of the paralleograms below. Give your answer to one decimal place where necessary.
y 4
3 2 1
0 1 (i) 3 2 3 5 I 2 3 4 5
Use the squares on the grid to help. (i)
y
4 3
2 1
0 (vi) 4
3 2 1
0 1 2 3 4 x y 3.61 3.61 1 2 3 4 5 6 7 x 4
3 2 1
0 1 2 3 4 x (vii) 4
3 2 1
0 5 1 2 3 4 x 6 2 7 8 9 10 11 12 13 14 15 16 x
7. Find the area and perimeter of the following shapes, to two decimal places where necessary. (ii)y
(iii) y 4
3 2 1
0 y A B 1 2 3 4 x
(iv) y 4
3 2 1
0 (viii)
1 2 3 4 x y
4
3 2 1
0 1 2 3 4 5 x
8. Find the area of the shaded sections in the diagrams provided. Give your answer to one decimal place where necessary. (i)
(ii) 70 mm (iii) (iv) 2 268 1 Linking Thinking 1 3 cm 5 cm
Radius ( r ) = 5 cm a = 120°
350 cm
(v) y 4
3 2 1
0
a = 72° C
1 2 3 4 x 1 (ii) (iii) 7 cm 6.5 m (ii) (iii) (iv) 8 m