Answer:
This should be correct ( I havent done it in 3 years but it seems right)
Step-by-step explanation:
1.c≈15.71
2.c≈31.42
3.d=12.5
Answer:
times around the Earth
Step-by-step explanation:
we know that
(one million million)
The average size of an apple is approximately 8.3 cm
Convert to km

Multiply by 3.7 trillion apples
Divide by the circumference of earth (40,075 km)
Answer:
994
Step-by-step explanation:
PEMDAS
Parentheses: 8+2 = 10
Exponents: 10^3 = 1000
Subtraction = 1000-6
= 994
Answer:
1cm = 110km
Step-by-step explanation:

Answer:
A. Stratification
Step-by-step explanation:
Stratified random sampling is used when the researcher wants to highlight a specific subgroup within an entire population.
Stratification technique is mainly used to reduce the population differences and to increase the efficiency of the estimates. In this method the population is divided into a number of subgroups or strata.
Each strata should be so formed such that they are homogeneous as far as possible.