peno211
10.02.2021 •
Mathematics
The pictogram shows information about the number of
vinyi records sold in a shop on fionday and Tuesday.
a) How many records were sold on Monday?
(1)
b) How many records were sold on Tuesday?
(1)
On Wednesday and Thursday
a total of 32 records were sold.
Mon
The number of records sold on
Thursday was 3 times the number
Key: of records sold on Wednesday.
Tues
c) How many records were (2)
sold on Wednesday?
Wed
represents 8
vinyl records
d) How many records were (1)
sold on Thursday?
Thu
Total marks: 5
Solved
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Ответ:
19.1 units
Step-by-step explanation:
Sides CB and DA your length are equals
Sides AB and DC your length are equals
Using the Pythagoras Theorem:
c² = a² + b²
Side AB:
c² = 1² + 5²
c² = 1 + 25
c² = 26
√c² = √26
c = 5.1 aprox.
Side CB:
c² = 2² + 4²
c² = 4 + 16
c² = 20
√c² = √20
c = 4.472 aprox
then:
the perimeter:
p = AB + BC + CD + DA
AB = CD = 5.1
DA = BC = 4.472
p = 2(5.1 + 4.472)
p = 2(9.572)
p = 19.144 aprox.
then the correct optión is:
19.1 units