The base of a rectangle is 10m and the height is 7m.?

Question

What is the perimeter of a rectangle dilated to half the size?
a. 70 m2
b. 35m2
c. 34 m
d. 17m

Answer 1

c. 34 m

(The base of a rectangle is 10m =LENGTH ,
the height is 7m=breadth.)
Perimeter
=length+breadth+length+breadth
=10+7+10+7
=20+14
=34 m
OR
PERIMETER
=2*length+2*breadth
=2*10+2*7
=20+14
=34m

Answer 2

First perimeter of rectangle was 10 + 10 + 7 + 7 = 34 m
now as sides are halved so 34 / 2 = 17 m

Answer 3

1.perimeter is always expressed in length units.
2.perimeter of the rectangle=(7+10)x2 =34 m
3.if base is haved then the perimeter =(7+5)x2=24 m
4.if height is haved then the perimeter=(3.5+10)x2=26 m
5.if both base & height are haved then the perimeter=(3.5+5)x2=17 m
but in this case new rectangle will appear 1/4 of the original rectangle.
6.to get a correct picture first draw a diagram of a rectangle with base
as 10 cm & height as 7 cm, then modify the diagram as mentioned
in (3), (4) above. you can see for yourself what the picture looks like.
7.if area is what you want then 7x10=70 sq.m. to start with. and you will
find that in (3) & (4) above area is = 35 sq.m. and finally in (5) area is
17.5 sq.m.
hope if this answers your problem and helps you in understanding problem, i am a happy person.

Answer 4

dilated?

if that means reduced to half the area or instead of 70 m2 to 35 m2 then the circumference comes down from 34 meters to a 3.5 meter high by 10 meter rectangle @ 27 meters. The perimeter.

If dilated means both height and width are reduced to half size, then the perimeter is reduced to half size and the perimeter is 17 meters.

Answer 5

perimeters are linear measurements, so a & b are out. the perimeter of the original rectangle is 34 m. reduced to 1/2 size, the perimeter is 17 m. answer is d

Answer 6

Hi. Add the four new sizes together (5+3.5+5+3.5).

Answer 7

It is 41m if we dilate its height & 44m if we dilate its base.

So all your options are wrong.

Answer 8

d.17m

Answer 9

D