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Temka [501]
2 years ago
11

The area of trapezium shaped field is 480 square meter, the distance between two parallel sides is 15m and one of the parallel s

ide is 20m. Find the other parallel side
Mathematics
1 answer:
marissa [1.9K]2 years ago
8 0

Answer: 44 m

Step-by-step explanation:

Given

The area of the trapezium is A=480\ m^2

Distance between parallel sides h=15\ m

One of the parallel sides is 20\ m

Suppose the other parallel side is x

The area of the trapezium is

A=\dfrac{1}{2}\times [\text{Sum of parallel sides}]\times h

Put values

\Rightarrow 480=\dfrac{1}{2}\times [20+x]\times 15\\\\\Rightarrow 480\times 2=300+15x\\\Rightarrow 960-300=15x\\\Rightarrow x=44\ m

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Answer:

The candle must burn at 2cm per hour in order to be 6cm tall after 4 hours. I know this because the candle has to burn 8cm in 4 hours and that amounts to 2cm per hour.

Step-by-step explanation:

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