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2 years ago

HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics

1 answer:

puteri [66]2 years ago

3 0

To find "s", you can use the Pythagorean theorem(which you can only use for right triangles):

a² + b² = c² (c is the hypotenuse/the longest side of the triangle)

t = 18 (hypotenuse)

r = 12

s = ?

Plug in the numbers into the equation

a² + b² = c²

(12)² + b² = (18)²

144 + b² = 324 Subtract 144 on both sides

b² = 180 Square root both sides

b = √180 or 13.4

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The area of a trapezium shaped field is 480m the distance between two parlel sides is 15m and one of the parrellel side is 20m f

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The other parallel side is 44 m

Step-by-step explanation:

Let us revise the formula of the area of a trapezium

$A=\frac{1}{2}(b_{1}+b_{2})h$ , where

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h is its height (The distance between the two parallel bases)

∵ The area of a trapezium is shaped field is 480 m²

∴ A = 480 m²

∵ The distance between two parallel sides is 15 m

∴ h = 15 m

∵ One of the parallel side is 20 m

∴ $b_{1}$ = 20 m

We need to find $b_{2}$

Substitute all these value in the rule of the area below

∵ $A=\frac{1}{2}(b_{1}+b_{2})h$

∴ $480=\frac{1}{2}(20+b_{2})(15)$

- Multiply the two sides by 2

∴ $960=(20+b_{2})(15)$

- Divide both sides by 15

∴ $64=20+b_{2}$

- Subtract 20 from both sides

∴ $44=b_{2}$

The other parallel side is 44 m

Learn more:

You can learn more about trapezium in brainly.com/question/7287774

#LearnwithBrainly

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