Answer:
14 hours
Step-by-step explanation:
Let's call the task 3x
The older bro does twice as younger so it would be 2x long and younger brother work x long
Since the totsl of work is 3x = 21 x woul be 21÷3 = 7
the older brother must work 2 × 7 = 14 hours long
Answer:
3 multiply by 6 multiply by 5
= 90 cm²
Answer:
x = 27
Step-by-step explanation:
x/9 = 3
Multiply each side by 9
x/9 * 9 = 3*9
x = 27
Answer:
--- Curved Surface Area
--- Total Surface Area
Step-by-step explanation:
Given
Shape: Cylinder
-- height
--- radius
Solving (a): The curved surface area (CSA)
This is calculated as:

This gives:



Solving (b): The total surface area (TSA)
This is calculated as:

This gives:



