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marishachu [46]
1 year ago
13

I got 8 mm and 2mm rectangle. what is the perimeter?the area is 16

Mathematics
1 answer:
Scorpion4ik [409]1 year ago
5 0

Let length, l=8 mm.

Braedth, b=2 mm.

The perimeter of the rectangle is,

\begin{gathered} P=2(l+b) \\ P=2(8+2) \\ P=2\times10 \\ P=20mm^2 \end{gathered}

Therefore, the perimeter of the rectangle is 20 mm^2.

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An airplane travels 290 km between Austin and Dallas in 1 h 15 min. What is it’s average speed?
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The average speed of the plane between Austin and Dallas is 232 kmph

<u>Solution:</u>

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\begin{array}{l}{1 \text { minute }=\frac{1}{60} \text { hours }} \\\\ {15 \text { minutes }=\frac{15}{60}=\frac{1}{4}} \\\\ {\text { 1 hour } 15 \text { minutes }=1 \frac{1}{4} \text { hours }=\frac{1 \times 4+1}{4}=\frac{5}{4} \text { hours }}\end{array}

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Eight less than a number is less than 10
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