A scale of 1:40 can be read as "one cm on the model corresponds to 40 cm in the original object". or
"one inch on the model corresponds to 40 inches
this means that the 2 inches correspond to 2 times 40, that is 80 inches and 1.5 corresponds to 1.5*40=60 inches
which means that the original painting has dimensions of 80 by 60 inches.
b) Area = 80 cm * 60 cm = 4,800 cm²
c) 80 cm * 1 inch / 2.54 cm = 31.50 inches ;
60 cm * 1 inch/2.54 cm = 23.60 inches
d) Area = 31.50 in * 23.60 in = 743.40 inches²
Answer:
153.86in^2
Step-by-step explanation:
Area of a circle = πr²
Where : = π = pi = 3.14
R = radius = 14/2 = 7
the diameter is the straight line that passes through the centre of a circle and touches the two edges of the circle.
7² x 3.14 = 153.86
A radius is half of the diameter
B. 1/27
1. you switch the denominator and the numerator (3/1 goes to 1/3).
2. then you take the exponents value (3) and put that as the exponent for 1/3
3. 1/(3^3) = 1/27
For this case, the first thing we must do is add all the masses.
We have then:
M = (41,918) + (41,918) + (24.83) + (24.83)
M = 133,496
We now write the answer in scientific notation:
M = 1.33496 * 10 ^ 2 grams
Answer:
The total mass of the four objects is:
M = 1.33496 * 10 ^ 2 grams
Answer:
0,063
Step-by-step explanation:
(7-4,9) x 0.03=2.1 x 0.03=0,063