roughly 3 and 1/2
10mm=1cm therefore 90mm=9cm
Perimeter = 6cm + 6cm + 9cm + 9cm = 30cm
54
7cm x 9cm= 63 sq.cms
add 9cm to10cm and you come up with 19cm is ths correct?
9cm is 3.54 inches.
1cm= about 0.393 inches 12 inches = 1 foot 9cm =3.5433070866141732283464566929134 inches 9cm=0.29527559055118110236220472440945 feet
It is 9cm or 3.54 inches.
it is unusual to build with "solid" blocks.. called CMU's.. most have holes through them the most common used is 8 inches by 8 inches by 12 inches.
The answer is 3.54 inches, as there is 2.54cm to an inch, so... 3cmx3cm=9cm divided by 2.54=3.54
10mm=1cm therefore 90mm=9cm
1 inch = 2.54 cm 1 cm = 10 mm 9cm / 2.54 = 3.543 inches ■
30 of them
9cm + 5cm + 9cm + 5cm = 28cm
90 mm
90mm = 9cm
Ok if you want the answer in inches, then the answer is 5.118 inches. there are 2.54cm in 1 inch.