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Find the missing value: Base Height Area of Triangle ______ 31.4 mm 1256 mm2

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Question

Find the missing value:

Base Height Area of Triangle
______ 31.4 mm 1256 mm2
Fill in the Blanks
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Solution

Base Height Area of Triangle
80 31.4 mm 1256 mm2

Explanation:

b = ?

h = 31.4 mm

Area = `1/2 xx b xx h` = 1256 mm2

`1/2 xx b xx 3.14` = 1256

b = `(1256xx2)/31.4`

b = 80 mm

Therefore, the base of triangle is 80 mm.

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Chapter 9: Perimeter and Area - EXERCISE 9.1 [Page 151]

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NCERT Mathematics [English] Class 7
Chapter 9 Perimeter and Area
EXERCISE 9.1 | Q 4. (ii) | Page 151

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