Asked by Teresa
A water trough is 8m long and its cross-section is an isosceles triangle which is 60cm wide at the top, and the height is 60cm. The trough is not full.
Give an expression for V, the volume of water in the trough in cm^3, when the depth of the water is d cm.
Thank you in advance!!
Give an expression for V, the volume of water in the trough in cm^3, when the depth of the water is d cm.
Thank you in advance!!
Answers
Answered by
Steve
draw a diagram. You can see that when the depth is d, the width of the cross-section is also d. So, the area of the cross-section is 1/2 d^2.
v = 1/2 d^2 * 800 cm^3
v = 1/2 d^2 * 800 cm^3
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