exam Maths Puzzle Numerical Ability

Geometry. For the floor plans given in exercise 27, determine whether the side
through the points (2, 3) and (11, 6) is perpendicular to the side through the points
(2, 3) and (

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exam Other Question

If a roof of a home is 7m from the peak to eave and the attic space is 3cm high at the peak, how long does each of the pieces of insulation need to be? Round to the nearest tenth.

Any help on this word problem would be great, thank you so much Billy is twice as old as his son,In 10 years,the ratio of their ages is 3:5.Find their present ages.