40×4×4=640
b=20 h=4
using formula:
1/2×base×height
1/2×20×4=40
its says scale by factor 4:
b=80 h=16
using formula:
1/2×base×height
1/2×80×16=640
answer------>>>>640cm^2
Answer:
the total surface of the box is 486 cm 2
.......
(54.3+56.1+n)/3 = 55
54.3+56.1+n = 165
54.6 = n
<h3>Answer:</h3>
3:8:1
<h3>step-by-step explanation:</h3>
3/12 x 144= 36
8/12 x 144= 96
96+36= 132
144-132= 12
12/12=1
Therefore, the ratio of Alyssa's nickels to dimes to quarters is 3:8:1
1 lb = 16 oz
3 1/2 (or 3.5)lbs = 3.5(16) = 56 oz which equals : 2 lbs and 24 oz or 3 lbs and 8 oz or 1 lb and 40 oz
