Question

( brain plus 100 points ) Can someone explain the formula to solve this?

Answer 1

`\sf Area \ of \ triangle = (1)/(2) \ x \ base \ x \ height`

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a) Given Area: 18 cm² and base: 9 cm

`\sf \rightarrow (1)/(2) (9)(h) = 18`

`\sf \rightarrow h = (18(2) )/(9)`

`\sf \rightarrow h = 4`

∴ The height of the triangle is 4 cm

b) Given Area: 32 m² and height : 4 m

`\sf \rightarrow (1)/(2) (b)(4) = 32`

`\sf \rightarrow b = (32(2))/(4)`

`\sf \rightarrow b = 16`

∴ The base of the triangle is 16 m

c) Given Area: 480 mm² and base: 30 mm

`\sf \rightarrow (1)/(2) (30)(h) = 480`

`\sf \rightarrow h= (480(2))/(30)`

`\sf \rightarrow h=32`

∴ The height of the triangle is 32 mm