a) Subtract 23 from the product of 7 and 9.
b) Write 0.45 as a fraction in the simplest form.
c) The length of a rectangular park is 21m and its breadth is 12m. Find the area of the park?
d) Calculate the number of days from April 28 to May 17.(include both days)
e) If the temperature of hot water is 83.4°C. After some time it becomes 57.6°C. Find the decrease in temperature.
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Answer:
a) (7×9)-23
= 40.
b) 9/20.
c) Area of rectangle = length×breadth
lets assume,
length (L)=12m
breadth (B)=21m
∴Area of rectangle =L×B
=12×21
= 252 m square
d) 20 days.
e) 25.8° C.
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