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To answer this question you need to know two things:

1. How do you find the perimeter of a rectangle?

2. How do you convert millimeters into centimeters?

Let's answer the questions in that order. First #1.

The perimeter of a shape is the sum of the lengths of each side. Think of it as taking a string and tracing the outside edges of shape. How long would that piece of string be? That is the perimeter. There is a formula for finding the perimeter of a rectangle: P = 2l + 2w. P is the perimeter, l is the length of the long side of the rectangle, and w is the short side of the rectangle. In English the formula says: the perimeter of a rectangle is equal to twice the length plus twice the width.

For this rectangle, l = 25 mm and w = 15 mm. So using our formula above:

P = 2 * 25 mm + 2 * 15 mm

P = 50 mm + 2 * 15 mm

P = 50 mm + 30 mm

P = 80 mm

So the perimeter is 80 mm. That leads us to #2.

How do you convert mm into cm? Well, mm stands for millimeters. In one meter, there are 1000 millimeters. One millimeter is one thousandth of a meter And cm stands for centimeters. In one meter there are 100 cm. One centimeter is one hundredth of a meter. That means in 100 cm there are 1000 mm. (If that is confusing, think of it this way. Does 1 meter equal 1 meter? Of course! So if 100 cm is equal to 1 meter, and 1000 mm equal 1 meter, it makes sense that 100 cm = 1000 mm).

Since 100 cm there are 1000 mm, one centimeter is the same as 10 millimeter. Put another way, millimeters are ten times smaller than centimeters and centimeters are ten times larger than millimeters. So to convert our 80 mm into cm, we just need to divide it by 10.

80 mm / 10 = 8 cm

So the answer is 8 centimeters.

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Q: What is the perimeter of a rectangle 15mm by 25mm in centimeters?

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Yes it is. 19cm=190mm. 25mm=2.5cm.

25mm * 8 = 200 mm = 200/1000 metres = 0.2 metres.

25mm2 = 5mm * 5mm

25 mm = 0.984252 in 25 mm ≈ approximately 63/64" There are approximately 984 thousandths of an inch in 25mm!

25mm = 3.973 kg/m

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I don't understand why there are so many questions about rectangles' perimeter. You just add the length and the width and double your answer....

There are 2.5 centimeters in 25 millimeters.

Perimeter = 20mmGiven: Area = 25mmAssuming that the figure is a square:side:= square root of area= square root of 25mm= 5mmPerimeter:= 4 * sides= 4 * 5mm= 20mm

The given dimensions are incorrect for it to be a square because a square has 4 equal sides and its area in square units is: a side times a side.

perimeter = 2h + 2b ....where h = height and b = base you say that the h = (2b+3) so 2h=2x(2b+3) so substitute that in and we have: perimeter = (2 x (2b +3)) + (2 x b) multiplying out gives perimeter = 4b + 6 + 2b = 6b+6 now we know the perimeter = 72mm = 6b+6 taking the 6 off both sides we get 6b=66mm divide by 6 and we find b=11mm we know h = 2b + 3 and that b=11 so h=22+3=25mm now Area of a rectangle = b x h = 11mm x 25mm = 275mm^2

Yes, 25mm is equal to 2.5cm. To convert millimeters to centimeters, you divide by 10 since there are 10 millimeters in 1 centimeter.

25 millimeters=2.5 centimeters

Wait until 25mm to be sure, but most likely yes because a yolk sac should be seen at 13mm.

there are 10 millimetres in each centimetre. so 10x2.5 gives 25mm in 2.5 cm.

The perimeter of a parallelogram is simply the sum of the sides. In this case, it is 2s + 2b. (2 sides + 2 base lengths.)P = 2s + 2b = 2(26) + 2(25) = 102 mm.

2.5*10-5 km in 25mm

== Answer == === There are 2.54 centimeters in 1 inch, so 1 centimeter is 0.394 inches. === == How many inches in one centimeter ===== 1 cm is 0.39370079 inches ===