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Chapter 11: Q. 19 (page 624)

Find the surface area of the prism, cylinder, or pyramid. Round to the nearest whole number.

Short Answer

Expert verified

The surface area is 90 square centimetres.

Step by step solution

01

Step 1. Given Information.

The figure is shown below.

02

Step 2. Formula used.

Areaofpyramid=b2

Areaoftriangle=12脳base脳height

03

Step 3. Calculation.

Evaluate the area of four slant sides of pyramid.

Area1=4脳12脳4脳85=885

Calculate the area of the base of pyramid.

Area2=4脳4=16

Total surface area (A) of cylinder is equal to the sum of Area1and Area2.

A=16+885=90

04

Step 4. Conclusion.

The surface area of pyramid is 90 square centimetres.

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