Answer:
1) a 7m
b 7.5m
2) 165cm
3) 5.667m
Explanation:
use knowledge on similarity and enlargement in all three that is
THE RATIO OF ANY TWO CORRESPONDING DISTANCES/MEASUREMENTS
OF TWO SIMILAR SHAPES IS EQUAL.
1)where y is the height of the tree
a) [1.2÷1]=[8.4÷y]
1.2=8.4÷y
1.2y=8.4
y=7m
b) [2.4÷1]=[18÷y]
2.4=18÷y
2.4y=18
y=7.5m
APPPLY THE SAME KNOWLEDGE IN THE OTHER 2