- 430.2 m
^{2} - 433.2 m
^{2} - 432.2 m
^{2} - 431.2 m
^{2}

Option 4 : 431.2 m^{2}

**GIVEN:**

Diameter = 19.6 m

Height = 10 m

**CONCEPT:**

The area of canvas required to build a conical tent is equal to its lateral surface area.

**FORMULA USED:**

L.S.A of cone = πrl

l^{2} = h^{2} + r^{2}

**CALCULATION:**

r = 19.6/2 = 9.8 m

l^{2} = 10^{2} + 9.8^{2} ≈ 196

l = 14 m

L.S.A = 22/7 × 9.8 × 14

L.S.A = 431.2 m^{2}

**∴ The answer is 431.2 m ^{2}**

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