Question

Work out the area and perimeter of the shape.

Answer 1

Area of semi circle

• πr²/2
• π(7)²/2
• 49π/2

Area of Triangle

• 1/2BH
• 1/2(18)(14)
• 14(9)
• 126

Total area

• 126+49π/2
• 202.9 m²

Perimeter

• 7π+18+14+√18²+14²
• 21.9+22.8+18
• 62.7m

Answer 2

area 202.93, perimeter 62.78

Explanation:

the triangle:

18² +14² = 520

√520 = 22.8

the curve, without further info, we'll have to assume it's 1/2 circle.

so circumference = 2πr =2 π (14/2) = 14 π = 43.96, 1/2 of it is 21.98

so perimeter of the whole thing is 18+22.8 +21.98 = 62.78

area: 1/2 circle = 1/2 π r² = 1/2 * 3.14*7² = 76.93

triangle area + 1/2 *18*14 = 126

total 202.93