Kite

John a kite, which is diamond-shaped. Its diagonals are 60 cm long and 90 cm long. Calculate:

a) the diamond side
b) how much paper John needs to make a kite if he needs a paper on both sides and needs 5% of the paper for bending?

Correct answer:

a =  54.0833 cm
b =  5670 cm²

Step-by-step explanation:

$a=\sqrt{(60/2{)}^2+(90/2{)}^2}=15\sqrt{13}=54.0833\text{cm}$

$b=2\cdot (60\cdot 90/2)\cdot 1.05=5670{\text{cm}}^2$

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