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2 years ago

Please help me fast and show all your work please thx

Mathematics

2 answers:

dalvyx [7]2 years ago

5 0

Answer:

Step-by-step explanation:

$Area=\frac{(a+b)*h}{2}\\\\=\frac{(24+32)*16}{2}\\\\=\frac{56*16}{2}=28*16\\=448squarecm\\$

$Area=\frac{(2.5+6)*5}{2}\\\\=\frac{8.5*5}{2}\\\\=\frac{42.5}{2}=21.25$

= 21.25 square cm

laiz [17]2 years ago

3 0

Answer:

area of trapezoid/trapezium = $\frac{h}{2} *(a+b)$

h=height

a and b are the parallel sides (top 2.5 and bottom 6 in this pic)

so $\frac{5}{2} *(2.5+6) = \frac{5}{2}*(8.5) = \frac{42.5}{2} = 21.25$

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The last answer; 12.

Step-by-step explanation:

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2 years ago

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We will use pythagoras' Theorem for this question

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2 years ago

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2 years ago

1)a chord of length 18cm midway the radius of a circle. calculate the radius of the circle correct to 1d.p. 2)if two parallel ch

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Given that the length of the chord is 18 cm and the chord is midway the radius of the circle.

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Given that the radius of the circle is 10 cm and the length of chord AB is 8 cm. Thus, half the length of the chord is 4cm. Let the distance of the mid-point O to /AB/ be x and half the angle formed by the chord at the centre of the circle be θ, then

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Part 2II:

Given that the radius of the circle is 10cm and the angle distended is 80 degrees. Let half the length of chord CD be y, then:

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Thus, the length of chord CD = 2(6.428) = 12.856 which is approximately 12.9 cm.

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2 years ago

Please help me fast and show all your work please thx ​

Please help me fast and show all your work please thx