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scZoUnD [109]
3 years ago
7

Daryl draws 6 equal size rectangles to make a new, larger rectangle. The area of one of the small rectangles is 12 square cm. an

d the length of the small rectangle is 4 cm. What is the perimeter/area?
This is for my little sister. This is 3rd grade math
Mathematics
1 answer:
OleMash [197]3 years ago
7 0
Easy,

If one of the small rectangles area is 12 and its side length is 4..

12/4=3

So the length and width of the small <span>rectangle</span> are length=4 width=3.

For the NEW rectangle take..

12*6=72

That means the NEW rectangles Area is 72 sq. cm.

To find it's Perimeter...

For 1 small triangle take 3+3+4+4=14  (P=l+l+w+w)

Since there are 6 small rectangles take 14*6=84

Thus, the perimeter of the NEW rectangle is 84 cm.

All together the Area and Perimeter of the Rectangle is...

A= 72 sq cm
and
P=84 cm
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$120.

Step-by-step explanation:

The amount he sells the tool kit for  = 80 + 20% of 80

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Let m be the marked price, then

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Step-by-step explanation:

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At a point on the ground 46 feet from the foot of a tree, the angle of elevation of the top of the tree is 68 degrees. What is t
Mandarinka [93]

Answer:

114 ft

Step-by-step explanation:

Imagine or construct a right triangle with the 46 ft leg lying on the ground.  This is the "adjacent side" of the triangle; it lies immediately adjacent to the 68 degree angle.  The side opposite this angle is h, the height of the tree.

The tangent function includes angle, opp side and adj side:

tan 68 degrees = opp / adj = h / (46 ft), and so:

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Then the height of the tree is h = (46 ft)(2.47) = 114 ft

6 0
3 years ago
On a car trip Sam drove m miles Kara drove twice as many miles as Sam and Darin drove 20 fewer miles than Kara in terms of m man
frutty [35]

Answer:

Darin drove '2m - 20' miles.

Step-by-step explanation:

We are given that Sam drove 'm' no. of miles.

As, it is also given that Kara drove twice as many miles as Sam. Therefore we get that Kara drove '2m' no. of miles.

Now, it is given that Darin drove 20 miles fewer than Kara .i.e. Darin drove '2m - 20' no. of miles.

Hence, in terms of m, Darin drove '2m - 20' miles.

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