Area R is;
Area sector with radius 8 cm and angle 20.16632290743° - Area triangle with height 8 cm and base (4.2sin 20.16632290743) cm
= ( 20.16632290743 *64π÷360) - (½*8*4.2sin 20.16632290743)
= 11.26299944816 - 5.79174146157
= 5.47125798659 cm²
≈ 5.47 cm²
We appreciate you contacting us. Our support will get back in touch with you soon!
Have a great day!
Please note that your query will be processed only if we find it relevant. Rest all requests will be ignored. If you need help with the website, please login to your dashboard and connect to support