please could i. have some help with the answer to this???
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Step-by-step explanation:
Let the value of unknown be 'y' then
Divide the figure into two parts, Rectangle and Triangle
→ Area of rectangle
= length×breadth
= 8 × y mm² = 8y mm²
→ Area of triangle
= 1/2 × base × height
= 1/2 × y mm × (14-8) mm = 3y mm²
Given, area of figure is 121 mm²
So, (8y + 3y) mm² = 121 mm²
→ y = 11
So, the value of unknown = 11
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