Question

formulas of ch.peremeater and area​

Answer 1

Answer:

The perimeter of rectangle = 2(l + b). Perimeter and Area of the Square: Perimeter of square = 4 × S. Area of square = S × S.

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Answer 2

Given:

➺ Find formulas of the perimeter and the area

Solution:

${⇝ \sf{ \: formula \: for \: perimeter \: of \: rectangle = 2(l + b)}} \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ ⇝\sf{ \: formula \: for \: perimeter \: of \: a \: square = 4 \times side} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ \sf{ \: ⇝formula \: for \: perimeter \: of \: a \: triangle = \: sum \: \: of \: all \: sides} \\ \\ \sf{ \: ⇝formula \: for \: perimeter of \: circle = 2\pi \: r}$

${⇝\sf{ \: formula \: for \:area \: of \: a \: rectangle = l \times b}} \: \: \: \: \: \\ \\ ⇝\sf{ \: formula \: for \:area \: of \: a \: square = side \times side} \\ \\ ⇝\sf{ \: formula \: for \:area \: of \: a \: triangle = \frac{1}{2} b \times h} \: \: \\ \\ ⇝\sf{ \: formula \: for \:area \: of \: a \: trapezium = \frac{a + b}{2} \times h } \\ \\ ⇝\sf{ \: formula \: for \:area \: of \: a \: circle = \pi \: {r}^{2}}$

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