The total surface area of a cone shaped Christmas tree of with base radius 6 m and height 8 m is 188.44 sq. meter. Is the given statement is true? (Take π= $\frac{22}{7}$ )

True

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False

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Solution

The correct option is B
False

Given r=6 m, h=8m

From the relation $l^{2}$ = $h^{2}$ + $r^{2}$ ,

$l = \sqrt{b^{2} + h^{2}}$
Slant Height l= 10 m

Total Surface area of the tree= πr(l+r)= 301.44 sq. m

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The total surface area of a cone shaped Christmas tree of with base radius 6 m and height 8 m is 188.44 sq. meter. Is the given statement is true? (Take π=227)

The correct option is B False Given r=6 m, h=8m From the relation l2=h2+r2, l=√b2+h2 Slant Height l= 10 m Total Surface area of the tree= πr(l+r)= 301.44 sq. m

The total surface area of a cone shaped Christmas tree of with base radius 6 m and height 8 m is 188.44 sq. meter. Is the given statement is true? (Take π= $\frac{22}{7}$ )

The correct option is B
False

Given r=6 m, h=8m

From the relation $l^{2}$ = $h^{2}$ + $r^{2}$ ,

$l = \sqrt{b^{2} + h^{2}}$
Slant Height l= 10 m

Total Surface area of the tree= πr(l+r)= 301.44 sq. m