Answer:
b = cd / a
Step-by-step explanation:
cd / b = a
cd = a * b
b = cd / a
(a)
The ratios of corresponding sides are equal
= 2 ← scale factor
hence w = 2 × 2.3 = 4.6 cm
(b)
The perimeters are linear and will also be proportional with a scale factor of 2
the areas are proportional with scale factor 2² = 4
That is the area of rectangle B is 4 times the area of rectangle A
In general
If 2 figures are similar then linear ratio of sides = k
Then the ratio of their areas is k²
and the ratio of their volumes is k³
Answer:
40 cm
Step-by-step explanation:
10x4= 40
Answer:
242
First is 9 times 10 which is 90, then 4 times 8 is 32 divided by 2 which is 16 times 2 since there are two, 32 again. 8 times 10 is 80. 4 times 10 is 40.
90 + 32 + 80 + 40 = 242
Step-by-step explanation:
I think
Step-by-step explanation:
12.5 since it decreases 10% and the old bag had 14 cups and 10% is 1.4