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Question

Construct a quadrilateral MATH with MA=4 cm,AT=3.6 cm,TH=4.5 cm, MH=5 cm and A=85. Also find its area.

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Solution

Given:
MA=4 cm,AT=3.6 cmTH=4.5 cm,MH=5 cm and A=85
Steps:
1. Draw a line segment MA=4 cm.
2. Make A=85.
3. With A as centre, draw an arc of radius 3.6 cm. Let it cut the ray AX at T.
4. With M and T as centres, draw arcs of radii 5 cm and 4.5 cm respectively and let them cut at H.
5. Join MH and TH.
6. MATH is the required quadrilateral.
Calculation of Area:
Area of the quadrilateral MATH=12×d×(h1+h2) sq. units
=12×5.1×(3.9+2.8)=2.55×6.7=17.09 cm2

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