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2 years ago

Find the area of the figure

Mathematics

1 answer:

VLD [36.1K]2 years ago

4 0

Answer:

132 cm²

Step-by-step explanation:

Consider the shape as a trapezoid with a rectangle added on top.

The area of the trapezoid is (7+19)/2 × 8 =104

The area of the rectangle is 7×4 = 28

Add the two areas: 104+28= 132

OR consider the shape as a tall rectangle with the two triangles added to the sides.

The area of the rectangle is 7(4+8) = 84

The area of the triangles is 8(19-7)/2= 48

[Each triangle is 24 cm²]

Add those areas

84+48=132

Same result: 132 cm²

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3 years ago

The 12th term of the arithmetic sequence is 10.5. The 18th term of this sequence is 13.5. Find the common difference and the fir

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Answer:

common difference is 0.5

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Step-by-step explanation:

use the formula for the nth term of an ap Tn=a+(n-1)d

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T18=13.5

therefore come up with two equations

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I hope this helps

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