Question

4. Find the missing values:
Base
Height
Area of Triangle
15 cm
87 cm
31.4 mm
1256 mm
22 cm
170.5 cm​

Answer 1

Answer:

We know that the area of triangle=1/2×base×height

In first row, base=15cm and area=87 cm2

∴87=1/2×15× height

⇒ height=87×2/15=11.6cm

In second row, height=31.4mm and area=1256 mm2

∴1256=1/2×base×31.4mm

⇒base= 1256×2/31.4=80mm

In third row, base=22 cm and area=170.5 cm2

∴170.5=1/2×22×height

⇒ height=170.5×2/22=15.5cm

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