The figure consists of,
Two rectangles of dimension 6 ft by 8 ft.
Two rectangles of dimension 8 ft by 10 ft.
Two rectangles of dimension 10 ft by 6 ft.
Determine the surface area of box.
Thus, surface area of the box is 376 square feet.
the annual rent of a house is RS. 9600 Find the property text due in the owner at the rate of 15 percent per annum
1 answer:
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Answer:
C = 97.20
Step-by-step explanation:
Given that C varies as r² then the equation relating them is
C = kr² ← k is the constant of variation
To find k use the condition C = 202.80 when r = 2.6
k = =
= 30
C = 30r² ← equation of variation
When r = 1.8, then
C = 30 × 1.8² = 97.20