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High School Mathematics
4.50 Total Surface Area of a Cone

Total Surface Area = (1/2) C * l + pi*r2
C = 2*pi*r
= (1/2)2*pi*r*l + pi*r2
=pi*r*l + pi*r2
Total Surface Area = pi*r (l + r)


Directions: Solve the following problems. Also write at least 5 examples of your own.
Q 1: The area of the base of a cone is 3850 Sq. cm. Its height is 120cm. Find its total surface area.
17640 Sq. cm.
17600 Sq. cm.
17680 Sq. cm.
17620 Sq. cm.

Q 2: The area of the base of a cone is 962.5 Sq. cm. Its height is 60cm. Find its total surface area.
4480 Sq. cm.
4420 Sq. cm.
4400 Sq. cm.
4460 Sq. cm.

Q 3: The area of the base of a cone is 616 Sq. cm. Its height is 48cm. Find its total surface area.
2816 Sq. cm.
2412 Sq. cm.
2814 Sq. cm.
2818 Sq. cm.

Q 4: The area of the base of a cone is 1886.5 Sq. cm. Its height is 84cm. Find its total surface area.
8626 Sq. cm.
2820 Sq. cm.
8624 Sq. cm.
8628 Sq. cm.

Q 5: The area of the base of a cone is 38.5 Sq. cm. Its height is 12cm. Find its total surface area.
174 Sq. cm.
172 Sq. cm.
178 Sq. cm.
176 Sq. cm.

Q 6: The area of the base of a cone is 154 Sq. cm. Its height is 24cm. Find its total surface area.
702 Sq. cm.
708 Sq. cm.
704 Sq. cm.
706 Sq. cm.

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Question 8: This question is available to subscribers only!


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