Question

If AY= 7cm , what is the length of BY?

Answer 1

BY = 9.90 cm

Explanation:

• from the figure the triangle has a right angle and one of 45°, therefore it is a right isosceles triangle, 2 equal sides and 2 equal angles, we solve with Pythagoras

AY = 7cm

AB = 7cm

BY = ?

BY =
`√(7^2+7^2)`

BY =
`√(98)`

BY = 9.89cm (round to 9.90cm)